47 results on '"Mentzakis E"'
Search Results
2. P-405 Assessing women’s preferences in a novel intrauterine device designed to monitor the womb environment in real time: A discrete choice experiment
- Author
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Ng, K.Y.B, primary, Evans, R, additional, Mentzakis, E, additional, and Cheong, Y, additional
- Published
- 2022
- Full Text
- View/download PDF
3. What are patient preferences for virtual consultations for orthopaedic rehabilitation? Results from a discrete choice experiment (DCE) and qualitative interviews
- Author
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Gilbert, A., primary, Mentzakis, E., additional, May, C., additional, Stokes, M., additional, Brown, H., additional, and Jones, J., additional
- Published
- 2022
- Full Text
- View/download PDF
4. The economic and health impact of rare diseases: A meta-analysis
- Author
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Sequeira, A.R., Mentzakis, E., Archangelidi, O., Paolucci, F., Sequeira, A.R., Mentzakis, E., Archangelidi, O., and Paolucci, F.
- Abstract
Objective Lack of medical and scientific knowledge on rare diseases (RD) often translates into limited research on them and a subsequent lack of understanding of their economic impact. This meta-analysis aims to fill this gap by evaluating the economic impact of RDs and exploring potential factors associated with the societal burden of RD. Methods Studies published between January 2010 and February 2017 were identified by searches in the PubMed platform. Thirty eligible studies were identified for inclusion, and nineteen studies were included in the meta-analysis and outcomes were explored. The cost categories include direct healthcare costs, direct non-healthcare formal costs, and direct non-healthcare informal costs. The patients’ health-related quality of life (QoL) dimensions examined include EQ-5D scores, VAS scores and Barthel index, and the carers’ utility outcomes include EQ-5d scores, VAS scores and Zarit scale. Random effects meta-regression models were used for modelling the impact of study and societal characteristics on cost. Results Across all RDs, mean direct healthcare (DH) costs ($16,513) account for the majority of direct costs (mainly driven by drug costs), followed by mean direct healthcare informal (€15,557) and mean direct healthcare formal (€4,579) costs. Body system affected by the RD, Gross Domestic Product (GDP) per capita and public health expenditure in country of study were the most significant determinants in predicting cost. In regards to QoL outcomes, patients with musculoskeletal diseases seem to have the lowest quality of life across EQ-5D scores, VAS scores and Barthel index. The burden on caregivers seemed to be associated with Autoimmune, followed by Musculoskeletal and Respiratory conditions. Conclusions This meta-analysis highlights the significant burden of RDs on the health care system and explicitly provides evidence for the magnitude of this impact. Such estimates are necessary to further the debate on priority setting arou
- Published
- 2021
5. Equity and efficiency priorities within the Spanish health system: A discrete choice experiment eliciting stakeholders preferences
- Author
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Mentzakis, E., García-Goñi, M., Paolucci, F., Sequeira, A.R., Mentzakis, E., García-Goñi, M., Paolucci, F., and Sequeira, A.R.
- Abstract
Background The trade-off between efficiency and equity has been largely studied in the health economics literature and for countries with different types of health systems. Even if efficiency and equity are desired, it is not always feasible to attain both simultaneously. In Spain, the National Health System has historically been recognized for its universal access and free of charge provision, with good health outcomes. However, the recent increase in health expenditures together with the economic cycle has turned the orientation of health policy implementation towards efficiency, threatening universality and equity in the access to healthcare. Methods A Discrete Choice Experiment was carried out to weigh priorities of policy-makers from different regions in Spain. A total of 69 valid questionnaires were collected and the preferences towards equity and/or efficiency criteria were evaluated. Composite League Tables (CLTs) were used to rank hypothetical health interventions based on their attributes. Results The Spanish health policy-makers, managers and other stakeholder displayed a stronger preference for severity of disease, high individual benefits, a large number of beneficiaries and proven cost-effectiveness criteria in decision making. The priority interventions targeted severe mental disorders, i.e. major depressive disorders and suicides (or suicidal attempts), especially for young and middle age categories across the three regions under study. Conclusion In times of economic crisis, health policy-makers, managers and other stakeholder value, in moderation, efficiency over equity. The impact of austerity measures on populations’ socio-economic wellbeing seems correlated with the preference for mental health interventions.
- Published
- 2019
6. Beyond DRG: The effect of socio-economic indicators on inpatient resource allocation in Australia
- Author
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Hasanova, R., Mentzakis, E., Paolucci, F., Shmueli, A., Hasanova, R., Mentzakis, E., Paolucci, F., and Shmueli, A.
- Abstract
Financing in Australia's public hospital works through the Australian Refined Diagnosis Related Groups (AR-DRGs) with separations to specific DRG groups based on medical diagnosis or surgical procedure, patient's age, mode of separation, clinical complexity and complications. This paper aims at assessing how the AR-DRGs reflect the efficiency and equity of the hospitals resource allocation. Using administrative data of all acute public hospital admissions and length of stay (LOS) as a proxy for hospital costs, this paper showed that patients’ socio-economic (SES) characteristics are a strong determinant of health care utilization. Our results revealed that the lower the SES, the longer the LOS and hence more utilization of the inpatient resources. Therefore, omitting SES from the risk adjusters list and solely focusing on DRG- based compensation penalizes hospitals catering to lower SES populations. Our findings further support the idea of smaller/remote hospitals based on block funding.
- Published
- 2018
7. Do political factors matter in explaining under- and overweight outcomes in developing countries?
- Author
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Fumagalli, E., Mentzakis, E., and Suhrcke, M.
- Subjects
Generalized ordered response models ,Economics and Econometrics ,BMI ,Developing countries ,Obesity ,nutritional and metabolic diseases ,Article - Abstract
Highlights • We study the role played by political factors in shaping the BMI distribution. • We allow for differing covariate effects across the BMI distribution. • We allow for heteroskedasticity across macro regions. • Democratic systems reduce under-weight, but increase overweight/obesity. • Effective political competition reduces both under-weight and obesity., We construct a rich dataset covering 47 developing countries over the years 1990–2007, combining several micro and macro level data sources to explore the link between political factors and body mass index (BMI). We implement a heteroskedastic generalized ordered logit model allowing for different covariate effects across the BMI distribution and accounting for the unequal BMI dispersion by geographical area. We find that systems with democratic qualities are more likely to reduce under-weight, but increase overweight/obesity, whereas effective political competition does entail double-benefits in the form of reducing both under-weight and obesity. Our results are robust to the introduction of country fixed effects.
- Published
- 2013
8. Efficiency and equity considerations in the preferences of health policy-makers in Israel
- Author
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Shmueli, A., Golan, O., Paolucci, F., Mentzakis, E., Shmueli, A., Golan, O., Paolucci, F., and Mentzakis, E.
- Abstract
Background There is a traditional tension in public policy between the maximization of welfare from given resources (efficiency) and considerations related to the distribution of welfare among the population and to social justice (equity). The aim of this paper is to measure the relative weights of the efficiency- and equity-enhancing criteria in the preferences of health policy-makers in Israel, and to compare the Israeli results with those of other countries. Methods We used the criteria of efficiency and equity which were adopted in a previous international study, adapted to Israel. The equity criteria, as defined in the international study, are: severity of the disease, age (young vs. elderly), and the extent to which the poor are subsidized. Efficiency is represented by the criteria: the potential number of beneficiaries, the extent of the health benefits to the patient, and the results of economic assessments (cost per QALY gained). We contacted 147 policy-makers, 65 of whom completed the survey (a response rate of 44%). Using Discrete Choice Experiment (DCE) methodology by 1000Minds software, we estimated the relative weights of these seven criteria, and predicted the desirability of technologies characterized by profiles of the criteria. Results The overall weight attached to the four efficiency criteria was 46% and that of the three equity criteria was 54%. The most important criteria were “financing of the technology is required so that the poor will be able to receive it” and the level of individual benefit. “The technology is intended to be used by the elderly” criterion appeared as the least important, taking the seventh place. Policy-makers who had experience as members of the Basket Committee appear to prefer efficiency criteria more than those who had never participated in the Basket Committee deliberations. While the efficiency consideration gained preference in most countries studied, Israel is unique in its balance between the weights attached to
- Published
- 2017
9. Comparative analysis of decision maker preferences for equity/efficiency attributes in reimbursement decisions in three European countries
- Author
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Baji, P., García-Goñi, M., Gulácsi, L., Mentzakis, E., Paolucci, F., Baji, P., García-Goñi, M., Gulácsi, L., Mentzakis, E., and Paolucci, F.
- Abstract
Background In addition to cost-effectiveness, national guidelines often include other factors in reimbursement decisions. However, weights attached to these are rarely quantified, thus decisions can depend strongly on decision-maker preferences. Objective To explore the preferences of policymakers and healthcare professionals involved in the decision-making process for different efficiency and equity attributes of interventions and to analyse cross-country differences. Method Discrete choice experiments (DCEs) were carried out in Austria, Hungary, and Norway with policymakers and other professionals working in the health industry (N = 153 respondents). Interventions were described in terms of different efficiency and equity attributes (severity of disease, target age of the population and willingness to subsidise others, potential number of beneficiaries, individual health benefit, and cost-effectiveness). Parameter estimates from the DCE were used to calculate the probability of choosing a healthcare intervention with different characteristics, and to rank different equity and efficiency attributes according to their importance. Results In all three countries, cost-effectiveness, individual health benefit and severity of the disease were significant and equally important determinants of decisions. All countries show preferences for interventions targeting young and middle aged populations compared to those targeting populations over 60. However, decision-makers in Austria and Hungary show preferences more oriented to efficiency than equity, while those in Norway show equal preferences for equity and efficiency attributes. Conclusion We find that factors other than cost-effectiveness seem to play an equally important role in decision-making. We also find evidence of cross-country differences in the weight of efficiency and equity attributes.
- Published
- 2016
10. Equity and efficiency preferences of health policy makers in China—a stated preference analysis
- Author
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Paolucci, F., Mentzakis, E., Defechereux, T., Niessen, L.W., Paolucci, F., Mentzakis, E., Defechereux, T., and Niessen, L.W.
- Abstract
Background Macroeconomic growth in China enables significant progress in health care and public health. It faces difficult choices regarding access, quality and affordability, while dealing with the increasing burden of chronic diseases. Policymakers are pressured to make complex decisions while implementing health strategies. This study shows how this process could be structured and reports the specific equity and efficiency preferences among Chinese policymakers. Methods In total, 78 regional, provincial and national level policymakers with considerable experience participated in a discrete choice experiment, weighting the relative importance of six policy attributes describing equity and efficiency. Results from a conditional logistic model are presented for the six criteria, measuring the associated weights. Observed and unobserved heterogeneities were incorporated and tested in the model. Findings are used to give an example of ranking health interventions in relation to the present disease burden in China. Results In general, respondents showed strong preference for efficiency criteria i.e. total beneficiaries and cost-effectiveness as the most important attributes in decision making over equity criteria. Hence, priority interventions would be those conditions that are most prevalent in the country and cost least per health gain. Conclusion Although efficiency criteria override equity ones, major health threats in China would be targeted. Multicriteria decision analysis makes explicit important trade-offs between efficiency and equity, leading to explicit, transparent and rational policy making.
- Published
- 2015
11. Priority setting in the Austrian healthcare system: results from a discrete choice experiment and implications for mental health.
- Author
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Mentzakis, E., Paolucci, F., Rubicko, G., Mentzakis, E., Paolucci, F., and Rubicko, G.
- Abstract
Background The impact of mental conditions is expected to be among the highest ranked causes of illness in high income countries by 2020. With changing health needs, policy makers have to make choices in an environment with increasingly constrained resources and competing demands. Discrete choice experiments have been identified as a useful approach to inform and support decision-making in health care systems and, in particular, its rationing. Methods Policymakers, researchers and health practitioners from Austria participated in an experiment designed to elicit preferences for efficiency and equity in a generic priority setting framework. Using aggregate criteria an empirical measure of the efficiency/equity trade-off is calculated and a selection of health care interventions, including mental health, are ranked in composite league tables (CLTs). Results With the exception of severity of the condition, all equity parameters decrease attractiveness of an intervention, whereas the opposite holds for all three efficiency criteria. The efficiency/equity ratio (i.e. decision-makers' preference for efficiency over equity) is 3.5 and 5 for interventions targeted at younger and middle age populations, respectively, while for older populations this ratio is negative implying a rejection of all equity criteria. Irrespective of such differences interventions targeting mental health rank highly on all CLTs. Conclusion Based on system-wide generic decision making criteria, mental health is shown to be a top priority for Austria. Preference-based approaches might offer complementary information to policymakers in priority setting decisions and a useful tool to support rationale rather than ad hoc decision-making.
- Published
- 2014
12. Decision-Making Criteria among National Policymakers in Five Countries: A Discrete Choice Experiment Eliciting Relative Preferences for Equity and Efficiency
- Author
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Mirelman, A., Mentzakis, E., Kinter, E., Paolucci, F., Fordham, R., Ozawa, S., Ferraz, M., Baltussen, R., Niessen, L.W., Mirelman, A., Mentzakis, E., Kinter, E., Paolucci, F., Fordham, R., Ozawa, S., Ferraz, M., Baltussen, R., and Niessen, L.W.
- Abstract
Background: Worldwide, there is a need for formalization of the priority setting processes in health. Recent research has used the term multicriteria decision analysis for methods that systematically include preferences for both equity and efficiency. The present study compares decision-makers' preferences at the country level for a set of equity and efficiency criteria according to a multicriteria decision analysis framework. Methods: Discrete choice experiments were conducted for Brazil, Cuba, Nepal, Norway, and Uganda. By using standardized methods, we elicited preferences for intervention attributes using a individual choice questionnaire. A multinomial logistic regression was applied to estimate the coefficients for all single-policy criteria, per country. Attributes were assigned to an equity group or to an efficiency group. After testing for scale variance, predicted probabilities for interventions with both types of attributes were compared across countries. Results: The Norway and Nepal groups showed considerable preferences for efficiency criteria over equity criteria with percent change in respective predicted sum probabilities of [10%, -84%] and [6%, -79%]. Brazil and Uganda also showed preference for the efficiency criteria though less convincingly ([-34%, -93%], [-18%, -63%], respectively). The Cuban group showed the strongest preferences with equity attributes dominating efficiency ([-52%, 213%]). Conclusions: Group preferences of policymakers show explicit but varying trade-offs of efficiency and equity in these diverse settings. This multicriteria decision analysis approach, using discrete choice experiments, indicates that systematic setting of health priorities is possible across a variety of countries. It may be a valuable tool to guide health reform initiatives.
- Published
- 2012
13. A discrete choice experiment investigating preferences for funding drugs used to treat orphan diseases: an exploratory study.
- Author
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Mentzakis E, Stefanowska P, and Hurley J
- Published
- 2011
- Full Text
- View/download PDF
14. Priority setting in the Austrian healthcare system: results from a discrete choice experiment and implications for mental health
- Author
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Mentzakis, E., Francesco Paolucci, Rubicko, G., Mentzakis, Emmanouil, Paolucci, Francesco, and Rubicko, Georg
- Subjects
Psychiatry and Mental Health ,Public Health, Environmental and Occupational Health - Abstract
The impact of mental conditions is expected to be among the highest ranked causes of illness in high income countries by 2020. With changing health needs, policy makers have to make choices in an environment with increasingly constrained resources and competing demands. Discrete choice experiments have been identified as a useful approach to inform and support decision-making in health care systems and, in particular, its rationing. Policymakers, researchers and health practitioners from Austria participated in an experiment designed to elicit preferences for efficiency and equity in a generic priority setting framework. Using aggregate criteria an empirical measure of the efficiency/equity trade-off is calculated and a selection of health care interventions, including mental health, are ranked in composite league tables (CLTs). With the exception of severity of the condition, all equity parameters decrease attractiveness of an intervention, whereas the opposite holds for all three efficiency criteria. The efficiency/equity ratio (i.e. decision-makers' preference for efficiency over equity) is 3.5 and 5 for interventions targeted at younger and middle age populations, respectively, while for older populations this ratio is negative implying a rejection of all equity criteria. Irrespective of such differences interventions targeting mental health rank highly on all CLTs. Based on system-wide generic decision making criteria, mental health is shown to be a top priority for Austria. Preference-based approaches might offer complementary information to policymakers in priority setting decisions and a useful tool to support rationale rather than ad hoc decision-making.
15. Priority setting in the German healthcare system: results from a discrete choice experiment
- Author
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V. Meusel, E. Mentzakis, P. Baji, G. Fiorentini, F. Paolucci, Meusel, V, Mentzakis, E, Baji, P, Fiorentini, G, and Paolucci, F
- Subjects
Discrete choice experiment ,Health Policy ,Germany ,Economics, Econometrics and Finance (miscellaneous) ,Healthcare ,Priority setting ,Efficiency ,Innovation ,Decision making - Abstract
Worldwide, social healthcare systems must face the challenges of a growing scarcity of resources and of its inevitable distributional effects. Explicit criteria are needed to define the boundaries of public reimbursement decisions. As Germany stands at the beginning of such a discussion, more formalised priority setting procedures seem in order. Recent research identified multi-criteria decision analysis (MCDA) as a promising approach to inform and to guide decision-making in healthcare systems. In that regard, this paper aims to analyse the relative weight assigned to various criteria in setting priority interventions in Germany. A discrete choice experiment (DCE) was employed in 2015 to elicit equity and efficiency preferences of 263 decision makers, through six attributes. The experiment allowed us to rate different policy interventions based on their features in a composite league table (CLT). As number of potential beneficiaries, severity of disease, individual health benefits and cost-effectiveness are the most relevant criteria for German decision makers within the sample population, the results display an overall higher preference towards efficiency criteria. Specific high priority interventions are mental disorders and cardiovascular diseases.
- Published
- 2023
16. The economic and health impact of rare diseases: A meta-analysis
- Author
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Olga Archangelidi, Emmanouil Mentzakis, Ana Rita Sequeira, Francesco Paolucci, Sequeira A.R., Mentzakis E., Archangelidi O., and Paolucci F.
- Subjects
Gerontology ,Quality of life ,medicine.medical_specialty ,business.industry ,Cost ,030503 health policy & services ,Health Policy ,Public health ,Biomedical Engineering ,Societal impact of nanotechnology ,Rare diseases ,03 medical and health sciences ,Indirect costs ,0302 clinical medicine ,Economic impact ,Meta-analysis ,Scale (social sciences) ,Health care ,medicine ,Meta-analysi ,030212 general & internal medicine ,Economic impact analysis ,0305 other medical science ,business - Abstract
Objective Lack of medical and scientific knowledge on rare diseases (RD) often translates into limited research on them and a subsequent lack of understanding of their economic impact. This meta-analysis aims to fill this gap by evaluating the economic impact of RDs and exploring potential factors associated with the societal burden of RD. Methods Studies published between January 2010 and February 2017 were identified by searches in the PubMed platform. Thirty eligible studies were identified for inclusion, and nineteen studies were included in the meta-analysis and outcomes were explored. The cost categories include direct healthcare costs, direct non-healthcare formal costs, and direct non-healthcare informal costs. The patients’ health-related quality of life (QoL) dimensions examined include EQ-5D scores, VAS scores and Barthel index, and the carers’ utility outcomes include EQ-5d scores, VAS scores and Zarit scale. Random effects meta-regression models were used for modelling the impact of study and societal characteristics on cost. Results Across all RDs, mean direct healthcare (DH) costs ($16,513) account for the majority of direct costs (mainly driven by drug costs), followed by mean direct healthcare informal (€15,557) and mean direct healthcare formal (€4,579) costs. Body system affected by the RD, Gross Domestic Product (GDP) per capita and public health expenditure in country of study were the most significant determinants in predicting cost. In regards to QoL outcomes, patients with musculoskeletal diseases seem to have the lowest quality of life across EQ-5D scores, VAS scores and Barthel index. The burden on caregivers seemed to be associated with Autoimmune, followed by Musculoskeletal and Respiratory conditions. Conclusions This meta-analysis highlights the significant burden of RDs on the health care system and explicitly provides evidence for the magnitude of this impact. Such estimates are necessary to further the debate on priority setting around RDs and their comparison with other chronic diseases. Nevertheless, the large degree of cost variability across RDs might suggest that the use of umbrella terms to raise awareness around RDs’ societal impact might not be warranted.
- Published
- 2021
17. Equity and efficiency priorities within the Spanish health system: A discrete choice experiment eliciting stakeholders preferences
- Author
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Emmanouil Mentzakis, Francesco Paolucci, Ana Rita Sequeira, Manuel García-Goñi, Mentzakis E., Garcia-Goni M., Sequeira A.R., and Paolucci F.
- Subjects
Health economics ,Equity (economics) ,Public economics ,business.industry ,030503 health policy & services ,Health Policy ,Biomedical Engineering ,Psychological intervention ,Stakeholder ,Priority setting ,MCDA ,Mental health ,03 medical and health sciences ,0302 clinical medicine ,Austerity ,Discrete choice experiment ,Spain ,Health care ,Policy-maker ,030212 general & internal medicine ,0305 other medical science ,business ,Health policy - Abstract
Background The trade-off between efficiency and equity has been largely studied in the health economics literature and for countries with different types of health systems. Even if efficiency and equity are desired, it is not always feasible to attain both simultaneously. In Spain, the National Health System has historically been recognized for its universal access and free of charge provision, with good health outcomes. However, the recent increase in health expenditures together with the economic cycle has turned the orientation of health policy implementation towards efficiency, threatening universality and equity in the access to healthcare. Methods A Discrete Choice Experiment was carried out to weigh priorities of policy-makers from different regions in Spain. A total of 69 valid questionnaires were collected and the preferences towards equity and/or efficiency criteria were evaluated. Composite League Tables (CLTs) were used to rank hypothetical health interventions based on their attributes. Results The Spanish health policy-makers, managers and other stakeholder displayed a stronger preference for severity of disease, high individual benefits, a large number of beneficiaries and proven cost-effectiveness criteria in decision making. The priority interventions targeted severe mental disorders, i.e. major depressive disorders and suicides (or suicidal attempts), especially for young and middle age categories across the three regions under study. Conclusion In times of economic crisis, health policy-makers, managers and other stakeholder value, in moderation, efficiency over equity. The impact of austerity measures on populations’ socio-economic wellbeing seems correlated with the preference for mental health interventions.
- Published
- 2019
18. Adjusting the risk-adjustment: Accounting for variation between organisations in the responsiveness of their expenditure to need.
- Author
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Urwin S, Anselmi L, Mentzakis E, Lau YS, and Sutton M
- Subjects
- Humans, England, Health Services Needs and Demand statistics & numerical data, Male, Female, Adult, Middle Aged, State Medicine, Aged, Adolescent, Risk Adjustment methods, Mental Health Services statistics & numerical data, Mental Health Services economics, Health Expenditures statistics & numerical data
- Abstract
There is concern that basing healthcare budgets on risk adjustment estimates derived from historical utilisation data may reinforce patterns of unmet need. We propose a method to avoid this, based on a measure of how closely local health organisations align resources to the needs of their populations. We refer to this measure as the 'responsiveness of expenditure to need' and estimate it using national person-level data on use of acute hospital and secondary mental health services in England. We find large variation in responsiveness in both services and show that higher expenditure responsiveness in mental health is associated with fewer suicides. We then re-estimate the national risk-adjustment model removing the data from the organisations with the lowest expenditure responsiveness to need. As expected, higher need individuals are estimated to have higher expenditure needs when less responsive organisations are removed from the estimation of the risk-adjustment. Removal of organisations with below-average responsiveness results in the neediest deciles of individuals having an extra £163 (7%) annual need for acute hospital care and an additional £79 (27%) annual need for mental health services. The application of this approach to risk adjustment would result in more resources being directed towards organisations serving higher-need populations., (Crown Copyright © 2024. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
19. Would plain packaging and health warning labels reduce smoking in the presence of informal markets? A choice experiment in Colombia.
- Author
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Rodríguez-Lesmes P, Góngora-Salazar P, Mentzakis E, Buckley N, Gallego JM, Guindon GE, Martínez JP, and Paraje G
- Subjects
- Humans, Colombia, Male, Female, Adult, Middle Aged, Commerce, Adolescent, Smoking psychology, Young Adult, Product Packaging methods, Product Packaging legislation & jurisprudence, Choice Behavior, Product Labeling methods, Product Labeling legislation & jurisprudence, Tobacco Products economics
- Abstract
Background: Despite progress made by many countries on the adoption of plain tobacco packaging laws over the last years, low- and middle-income countries, with a large supply of loose cigarettes via informal vendors, remain far behind., Aim: To study the potential effectiveness of plain tobacco packaging and dissuasive cigarette sticks, via willingness-to-pay estimates, when illicit cigarette options are available., Methods: We conducted a discrete choice experiment (DCE) in which respondents chose licit and illicit products with three attributes: packaging (standard vs. plain packaging), stick design (branded stick vs. stick with warning), and price level. The sample, collected on 12/2021, consisted of 1761 respondents from an internet panel involving smokers and nonsmokers. Conditional logit and latent class models were used to estimate the willingness-to-pay (WTP) to avoid restrictive packaging elements., Results: Nonsmokers are willing to pay USD $5.63 for a pack of cigarettes to avoid plain packaging, which is higher than the actual commercial price of illicit cigarettes (USD $2.40). The WTP increases to USD $12.14 in the presence of illicit alternatives. Smokers are also willing to pay to avoid illicit options, which they also deem riskier, and the presence of such options increases the WTP to avoid plain packaging. However, nonsmokers do not perceive the illicit option as riskier. The dissuasive stick (stick with warning) does not affect perceptions of risk and plays a small role in terms of choice for both smokers and nonsmokers., Conclusions: Even in the presence of illicit tobacco alternatives, plain packaging seems to be as effective in reducing the attractiveness of tobacco products in Colombia as in other countries that have already adopted it. Given conflicting results on the case for dissuasive sticks, there is a need for more research., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
20. The direct and spillover effects of diabetes diagnosis on lifestyle behaviours.
- Author
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Thomas RL and Mentzakis E
- Subjects
- Humans, Health Behavior, Life Style, Exercise, Family Characteristics, Diabetes Mellitus, Type 2 diagnosis
- Abstract
Using blood sample data we exploit an arbitrary cut-off of diabetes risk and through a fuzzy regression kink design we estimate the effect of a diabetes diagnosis on own and partner health-related behaviours. Diabetes diagnosis increases the probability of exercising, both for those diagnosed with diabetes and their partner. We also conduct mediation analysis which suggests that joint household participation is the channel behind this effect. Our results have significant implications for the understanding of the channels that induce behavioural change, and household decision making, as well as, for the evaluation of diabetes related policies., (© 2024 The Authors. Health Economics published by John Wiley & Sons Ltd.)
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- 2024
- Full Text
- View/download PDF
21. Cigarette packaging, warnings, prices, and contraband: A discrete choice experiment among smokers in Ontario, Canada.
- Author
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Guindon GE, Mentzakis E, and Buckley NJ
- Subjects
- Humans, Ontario epidemiology, Smoking epidemiology, Product Packaging, Commerce, Smokers, Tobacco Products
- Abstract
In Canada, despite substantial decline, tobacco use remains the leading risk factor responsible for mortality and morbidity. There is overwhelming evidence that higher tobacco taxes reduce tobacco use, even if high taxes create an incentive to avoid or evade tobacco taxes. Recently, in addition to taxes, plain and standardized packaging and printing a warning on each cigarette have been lauded to reduce tobacco use. In November 2019, Canada became the country with the most comprehensive cigarette packaging regulations; and in June 2022, Canada proposed to print health warnings on individual cigarettes, the first jurisdiction to ever do so. The regulations came into force on August 1, 2023, and are being implemented through a stepwise approach. Our objective was to examine the effects of plain and standardized packaging, warning on cigarettes, price, and the availability of illicit cigarettes on intention to purchase and risk perceptions. We conducted a discrete choice experiment, and examined heterogeneity in preferences using latent class models among smokers in Ontario, Canada. We found that using latent class analyses was essential in quantifying preferences for attributes of cigarettes and cigarette packs. First, nearly half of smokers stated a preference for cheaper illicit cigarettes in a branded pack without any health warnings, regardless of the licit cigarette alternatives. For about 20% of respondents, plain packaging and especially warning on cigarette sticks decreased the probability of stating a purchasing preference for these alternatives. Third, about a third of respondents chose competing alternatives with mostly one attribute in mind, price. Lastly, none of the products and attributes seem to have significantly influenced risk perception. Our findings attest to the importance of prices and taxes, to the potential of warnings on cigarette sticks to control tobacco use, and indicate that efforts to restrict the availability of illicit cigarettes may yield substantial benefits., (Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
22. Discrete choice experiment exploring women's preferences in a novel device designed to monitor the womb environment and improve our understanding of reproductive disorders.
- Author
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Ng KYB, Evans R, Morgan H, Mentzakis E, and Cheong YC
- Subjects
- Female, Humans, Reproduction, State Medicine, Uterus, Choice Behavior, Patient Preference
- Abstract
Objectives: The study aims to determine the relative importance of key attributes of a novel intrauterine device. The device monitors uterine oxygen, pH and temperature in real time with the aim of improving our understanding and treatment of reproductive disorders., Design: A discrete choice experiment was used to elicit preferences in this novel investigative tool. The attributes and levels used in the choice scenarios were length of time using the device (7, 14 or 28 days), information obtained to guide treatment (limited, majority or all cases), risk of complications (1% or 10%) and discreteness (completely discrete, moderately discrete or indiscrete)., Setting: Secondary care hospital in Hampshire, UK., Participants: 361 women of reproductive age., Primary and Secondary Outcome Measures: Conditional logit and latent class logit regression models to determine the preference for each attribute., Results: Conditional logit coefficients allow comparison between attributes; women placed most importance on obtaining information to guide treatment in all cases (2.771), followed by having a completely discrete device (1.104), reducing risk of complications by 1% (0.184) and decreased length of time by 1 day (0.0150). All coefficients p<0.01. Latent class conditional logit assigns participants to two classes with 27.4% in class 1 who are less likely to have higher education or qualify for National Health Service-funded in vitro fertilisation compared with class 2. Those in class 2 placed 1.7 times more importance on a device whose information guided treatment in all cases and a 1% decrease in complications risk was nearly 15 times more attractive., Conclusions: Women placed most importance on having a device that obtains information to guide treatment and are willing to use the device for a longer, have a device with higher risk of complications and an indiscrete device if it is able to provide answers and direction for treatment of their reproductive disorder., Competing Interests: Competing interests: YCC is a co-founder, non-executive director and minority shareholder of Verso Biosense., (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ.)
- Published
- 2022
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23. Price versus clinical guidelines in primary care statin prescribing: a retrospective cohort study and cost simulation model.
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De Zarate MO, Mentzakis E, Fraser SD, Roderick P, Rutter P, and Ornaghi C
- Subjects
- Drugs, Generic, Humans, Practice Patterns, Physicians', Primary Health Care, Retrospective Studies, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use
- Abstract
Objective: To investigate the relative impact of generic entry and National Institute for Health and Care Excellence clinical guidelines on prescribing using statins as an exemplar., Design: Retrospective analysis of statin prescribing in primary care and cost simulation model., Setting: Royal College of General Practitioners Research and Surveillance Centre (RCGP R&SC) database and Prescription Cost Analysis (PCA) database., Participants: New patients prescribed statins for the first time between July 2003 and September 2018., Main Outcome Measures: Shares of new patients prescribed one of the five statins available in the British National Formulary, and cost of prescribing statins to new and existing patients in primary care in England., Results: General trends of statin' prescriptions were largely driven by a decrease in acquisition costs triggered by patent expiration, preceding NICE guidelines which themselves did not seem to affect prescription trends. Significant heterogeneity is observed in the prescription of the most cost-effective statin acrossGPs. A cost simulation shows that, between 2004 and 2018, the NHS could have saved £2.8bn (around 40% of the £6.3bn spent on statins during this time) if all GP practices had prescribed only the most cost-effective treatment., Conclusions: There is potential for large savings for the NHS if new and, whenever possible, ongoing patients are promptly switched to the first medicine that becomes available as generic within a therapeutic class as long as it has similar efficacy to still-patented medicines.
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- 2022
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24. Incidence and risk factors of cancer in individuals with cystic fibrosis in the UK; a case-control study.
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Archangelidi O, Cullinan P, Simmonds NJ, Mentzakis E, Peckham D, Bilton D, and Carr SB
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- Case-Control Studies, Humans, Incidence, Risk Factors, United Kingdom epidemiology, Cystic Fibrosis complications, Cystic Fibrosis diagnosis, Cystic Fibrosis epidemiology, Neoplasms diagnosis, Neoplasms epidemiology, Neoplasms etiology
- Abstract
To assess cancer incidence in the UK cystic fibrosis (CF) population and determine the associated risk factors, we undertook a nested case-control study of patients with CF, registered with the UK CF Registry. Each case with a first reported cancer between 1999 and 2017 was matched with up to 4 controls: by age (±2-years) and year of cancer diagnosis. Conditional logistic regressions were adjusted for sex, lung function (FEV
1 %), CF related diabetes (CFRD), F508del status, transplant status, DIOS, gastro-oesophageal reflux disease, meconium ileus, Pseudomonas aeruginosa infection, pancreatic insufficiency, proton pump inhibitor (PPI) use, IV antibiotic days and BMI. Results: From 12,886 registered patients, 146 (1.1%) cases of malignancy were identified with 14.3% of cases occurring post solid organ transplant. Site of primary cancer was available for 98 patients: 22% were gastro-intestinal in origin (77% lower, 23% upper GI), 13% skin, 13% breast and 11% lymphomas/leukaemia. In univariable analysis, transplantation increased the odds of reporting any cancer by 2.46 times (95%CI: 1.3-4.6). CFRD also increased the odds of reporting any cancer (OR 2.35; CI: 1.37-4.0) and PPI use (OR 2.0; CI 1.28-3.19). In the multivariable models significant associations with CFRD and transplant remained, while PA infection, PPI use and being overweight showed increased, but statistically insignificant risks. The incidence of GI cancer was strongly associated with CFRD (OR=4.04; 1.47-11.1). Conclusions: We observed a high incidence of lower GI cancers in our cohort which was significantly affected by the presence of CFRD. Screening for gastrointestinal cancers could benefit patients at higher risk., Competing Interests: Declaration of Competing Interest None of the authors have any direct conflicts of interest to declare in relation to this study. OA was funded by the CF Trust research grant: SRC #4 CF-EpiNet: Harnessing data to improve lives. Outside of the submitted work SC, DB and NS are or have recently been principal investigators (PI) for CF Trust Registry-based pharmacovigilance studies: Pharmaxis (SC), Vertex, Teva (DB) and Chiesi (NS). SC and NS have received personal fees from Vertex, Chiesi, Zambon, NS has also received personal fees from Gilead and Teva outside of the submitted work., (Copyright © 2021. Published by Elsevier B.V.)- Published
- 2022
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25. Patient preferences for use of virtual consultations in an orthopaedic rehabilitation setting: Results from a discrete choice experiment.
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Gilbert AW, Mentzakis E, May CR, Stokes M, and Jones J
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- Humans, Information Technology, Referral and Consultation, Research Design, Orthopedics, Patient Preference
- Abstract
Objective: Virtual Consultations may reduce the need for face-to-face outpatient appointments, thereby potentially reducing the cost and time involved in delivering health care. This study reports a discrete choice experiment (DCE) that identifies factors that influence patient preferences for virtual consultations in an orthopaedic rehabilitation setting., Methods: Previous research from the CONNECT (Care in Orthopaedics, burdeN of treatmeNt and the Effect of Communication Technology) Project and best practice guidance informed the development of our DCE. An efficient fractional factorial design with 16 choice scenarios was created that identified all main effects and partial two-way interactions. The design was divided into two blocks of eight scenarios each, to reduce the impact of cognitive fatigue. Data analysis were conducted using binary logit regression models., Results: Sixty-one paired response sets (122 subjects) were available for analysis. DCE factors (whether the therapist is known to the patient, duration of appointment, time of day) and demographic factors (patient qualifications, access to equipment, difficulty with activities, multiple health issues, travel costs) were significant predictors of preference. We estimate that a patient is less than 1% likely to prefer a virtual consultation if the patient has a degree, is without access to the equipment and software to undertake a virtual consultation, does not have difficulties with day-to-day activities, is undergoing rehabilitation for one problem area, has to pay less than £5 to travel, is having a consultation with a therapist not known to them, in 1 weeks' time, lasting 60 minutes, at 2 pm. We have developed a simple conceptual model to explain how these factors interact to inform preference, including patients' access to resources, context for the consultation and the requirements of the consultation., Conclusions: This conceptual model provides the framework to focus attention towards factors that might influence patient preference for virtual consultations. Our model can inform the development of future technologies, trials, and qualitative work to further explore the mechanisms that influence preference.
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- 2022
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26. Powered Respirators Are Effective, Sustainable, and Cost-Effective Personal Protective Equipment for SARS-CoV-2.
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Munro A, Prieto J, Mentzakis E, Dibas M, Mahobia N, Baker P, Herbert S, Smith T, Hine M, Hall J, McClarren A, Davidson M, Brooks J, Fisher J, Griffiths D, Morgan H, Giulietti C, Faust SN, and Elkington P
- Abstract
Objectives: The provision of high-quality personal protective equipment (PPE) has been a critical challenge during the COVID-19 pandemic. We evaluated an alternative strategy, mass deployment of a powered air-purifying respirator (PeRSo), in a large university hospital. Methods: We performed prospective user feedback via questionnaires sent to healthcare workers (HCWs) issued PeRSos, economic analysis, and evaluated the real-world impact. Results: Where paired responses were available, PeRSo was preferred over droplet precautions for comfort, patient response, overall experience, and subjective feeling of safety. For all responses, more participants reported the overall experience being rated "Very good" more frequently for PeRSo. The primary limitation identified was impairment of hearing. Economic simulation exercises revealed that the adoption of PeRSo within ICU is associated with net cost savings in the majority of scenarios and savings increased progressively with greater ITU occupancy. In evaluation during the second UK wave, over 3,600 respirators were deployed, all requested by staff, which were associated with a low staff absence relative to most comparator hospitals. Conclusions: Health services should consider a widespread implementation of powered reusable respirators as a safe and sustainable solution for the protection of HCWs as SARS-CoV-2 becomes an endemic viral illness., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Munro, Prieto, Mentzakis, Dibas, Mahobia, Baker, Herbert, Smith, Hine, Hall, McClarren, Davidson, Brooks, Fisher, Griffiths, Morgan, Giulietti, Faust and Elkington.)
- Published
- 2021
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27. A proof-of-concept framework for the preference elicitation and evaluation of health informatics technologies: the online PRESENT patient experience dashboard as a case example.
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Mentzakis E, Tkacz D, and Rivas C
- Subjects
- Choice Behavior, Cost-Benefit Analysis, Female, Humans, Male, Patient Preference, Pregnancy, Surveys and Questionnaires, Consumer Behavior, Internet, Medical Informatics, User-Computer Interface
- Abstract
Background: Constrained budgets within healthcare systems and the need to efficiently allocate resources often necessitate the valuation of healthcare interventions and services. However, when a technological product is developed for which no market exists it is a challenge to understand how to place the product and which specifications are the most sought after and important for end users. This was the case for a dashboard we developed, displaying analyses of patient experience survey free-text comments., Method: We describe a customisation and evaluation process for our online dashboard that addresses this challenge, using a Discrete Choice Experiment (DCE). We were not interested in the exact content of the dashboard, which was determined in previous stages of our larger study, but on the availability of features and customization options and how they affect individuals' purchasing behaviours., Results: Our DCE completion rate was 33/152 (22%). Certain features were highly desirable - the search function, filtering, and upload own data - and would contribute significant added value to the dashboard. Purchasing behaviour was dependent on the dashboard features, going from a 10 to 90% probability to purchase when we moved from a baseline to a fully-featured dashboard. The purchasing behaviour elicited in this study assumes individuals already have buy-in to the online dashboard, so we assessed only how the various features of our dashboard influence the probability of purchasing the product. Results were used to inform development of a generic checklist of desirable healthcare dashboard features as well as to refine the dashboard itself. Our study suggests the development of the online dashboard and its roll-out in the market would result in a positive net benefit in terms of utilities. The cost-benefit analysis offers a lower bound estimate of the net benefit as it does not acknowledge or incorporate non-monetary benefits that would result from the use of the online dashboard, such as from improved healthcare management., Conclusion: DCEs can be successfully used to inform development of an online dashboard by determining preferences for particular features and customisation options and how this affects individuals' purchasing behaviours. The process should be transferable to the development of other technologies.
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- 2020
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28. Inequality aversion in income, health, and income-related health.
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Hurley J, Mentzakis E, and Walli-Attaei M
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- Adult, Aged, Female, Humans, Male, Middle Aged, Health Status Disparities, Income, Social Class
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Based on a survey of a sample of the general public, we estimate inequality aversion across income, health, and bivariate income-health. Inequality aversion is domain specific: mean inequality aversion is greater for income than for health, but the underlying distributions of aversion attitudes differ, with a highly bi-modal distribution of inequality-aversion values for health in which nearly half the participants display very low aversion and nearly half display very high aversion. Aversion to income-related health inequality is greater than that to income or health alone. Consistent with previous literature, we find only weak associations between aversion attitudes and individual characteristics. The magnitude of the estimates implies potentially large gains in welfare from reducing inequality in these domains., (Copyright © 2019 Elsevier B.V. All rights reserved.)
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- 2020
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29. Survey modes comparison in contingent valuation: Internet panels and mail surveys.
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Ryan M, Mentzakis E, Matheson C, and Bond C
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- Adult, Age Factors, Aged, Female, Financing, Personal, Humans, Illicit Drugs, Male, Middle Aged, Sex Factors, Substance-Related Disorders therapy, Cost-Benefit Analysis, Internet, Postal Service, Surveys and Questionnaires
- Abstract
Stated preferences methods are extensively applied in health economics to elicit preferences. Although mailed surveys were commonly used to collect data, internet panel (IP) surveys are being increasingly used. This raises questions about the validity of responses and estimated willingness-to-pay (WTP) values generated from IP surveys. We conduct the first study in health to compare a contingent valuation IP survey with a mailed survey using the electoral roll. Our IP has a higher response rate and lower item missing response rate. The difference is reduced but remains when restricting comparisons with valid WTPs. Sample characteristics differ, with significant differences between modes for gender, age, income, and attitudes and knowledge. Although difference in WTP values exist, with the IP resulting in higher values, we find limited evidence that such differences are statistically significant. The mail survey has lower initial cost per response; however, once restricting samples to valid WTP responses with nonmissing respondent information, the cost per response across modes is similar. Our results, suggesting that IPs generate valid and cost-effective values, are encouraging as researchers move increasingly to IPs to collect preference data., (© 2019 John Wiley & Sons, Ltd.)
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- 2020
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30. Protocol for the CONNECT project: a mixed methods study investigating patient preferences for communication technology use in orthopaedic rehabilitation consultations.
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Gilbert AW, Jones J, Stokes M, Mentzakis E, and May CR
- Subjects
- Communication, Humans, Information Technology, Musculoskeletal Diseases rehabilitation, Patient Preference, Remote Consultation, Research Design
- Abstract
Introduction: Technology has been placed at the centre of global health policy and has been cited as having the potential to increase efficiency and remove geographical boundaries for patients to access care. Communication technology may support patients with orthopaedic problems, which is one of the leading causes of disability worldwide. There are several examples of technology being used in clinical research, although uptake in practice remains low. An understanding of patient preferences will support the design of a communication technology supported treatment pathway for patients undergoing orthopaedic rehabilitation., Methods and Analysis: This mixed methods project will be conducted in four phases. In phase I, a systematic review of qualitative studies reporting communication technology use for orthopaedic rehabilitation will be conducted to devise a taxonomy of tasks patients' face when using these technologies to access their care. In phase II, qualitative interviews will investigate how the work of being a patient changes during face-to-face and communication technology consultations and how these changes influence preference. In phase III, a discrete choice experiment will investigate the factors that influence preferences for the use of communication technology for orthopaedic rehabilitation consultations. Phase IV will be a practical application of these results. We will design a 'minimally disruptive' communication technology supported pathway for patients undergoing orthopaedic rehabilitation., Ethics and Dissemination: The design of a pathway and underpinning patient preference will assist in understanding factors that might influence technology implementation for clinical care. This study requires ethical approval for phases II, III and IV. Approvals have been received for phase II (approval received on 4 December 2016 from the South Central-Oxford C Research Ethics Committee (IRAS ID: 255172, REC Reference 18/SC/0663)) and phase III (approval received on 18 October 2019 from the London-Hampstead Research Ethics Committee (IRAS ID: 248064, REC Reference 19/LO/1586)) and will be sought for phase IV. All participants will provide informed written consent prior to being enrolled onto the study., Prospero Registration Number: CRD42018100896., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY. Published by BMJ.)
- Published
- 2019
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31. Automated analysis of free-text comments and dashboard representations in patient experience surveys: a multimethod co-design study
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Rivas C, Tkacz D, Antao L, Mentzakis E, Gordon M, Anstee S, and Giordano R
- Abstract
Background: Patient experience surveys (PESs) often include informative free-text comments, but with no way of systematically, efficiently and usefully analysing and reporting these. The National Cancer Patient Experience Survey (CPES), used to model the approach reported here, generates > 70,000 free-text comments annually., Main Aim: To improve the use and usefulness of PES free-text comments in driving health service changes that improve the patient experience., Secondary Aims: (1) To structure CPES free-text comments using rule-based information retrieval (IR) (‘text engineering’), drawing on health-care domain-specific gazetteers of terms, with in-built transferability to other surveys and conditions; (2) to display the results usefully for health-care professionals, in a digital toolkit dashboard display that drills down to the original free text; (3) to explore the usefulness of interdisciplinary mixed stakeholder co-design and consensus-forming approaches in technology development, ensuring that outputs have meaning for all; and (4) to explore the usefulness of Normalisation Process Theory (NPT) in structuring outputs for implementation and sustainability., Design: A scoping review, rapid review and surveys with stakeholders in health care (patients, carers, health-care providers, commissioners, policy-makers and charities) explored clinical dashboard design/patient experience themes. The findings informed the rules for the draft rule-based IR [developed using half of the 2013 Wales CPES (WCPES) data set] and prototype toolkit dashboards summarising PES data. These were refined following mixed stakeholder, concept-mapping workshops and interviews, which were structured to enable consensus-forming ‘co-design’ work. IR validation used the second half of the WCPES, with comparison against its manual analysis; transferability was tested using further health-care data sets. A discrete choice experiment (DCE) explored which toolkit features were preferred by health-care professionals, with a simple cost–benefit analysis. Structured walk-throughs with NHS managers in Wessex, London and Leeds explored usability and general implementation into practice., Key Outcomes: A taxonomy of ranked PES themes, a checklist of key features recommended for digital clinical toolkits, rule-based IR validation and transferability scores, usability, and goal-oriented, cost–benefit and marketability results. The secondary outputs were a survey, scoping and rapid review findings, and concordance and discordance between stakeholders and methods., Results: (1) The surveys, rapid review and workshops showed that stakeholders differed in their understandings of the patient experience and priorities for change, but that they reached consensus on a shortlist of 19 themes; six were considered to be core; (2) the scoping review and one survey explored the clinical toolkit design, emphasising that such toolkits should be quick and easy to use, and embedded in workflows; the workshop discussions, the DCE and the walk-throughs confirmed this and foregrounded other features to form the toolkit design checklist; and (3) the rule-based IR, developed using noun and verb phrases and lookup gazetteers, was 86% accurate on the WCPES, but needs modification to improve this and to be accurate with other data sets. The DCE and the walk-through suggest that the toolkit would be well accepted, with a favourable cost–benefit ratio, if implemented into practice with appropriate infrastructure support., Limitations: Small participant numbers and sampling bias across component studies. The scoping review studies mostly used top-down approaches and focused on professional dashboards. The rapid review of themes had limited scope, with no second reviewer. The IR needs further refinement, especially for transferability. New governance restrictions further limit immediate use., Conclusions: Using a multidisciplinary, mixed stakeholder, use of co-design, proof of concept was shown for an automated display of patient experience free-text comments in a way that could drive health-care improvements in real time. The approach is easily modified for transferable application., Future Work: Further exploration is needed of implementation into practice, transferable uses and technology development co-design approaches., Funding: The National Institute for Health Research Health Services and Delivery Research programme., (Copyright © Queen’s Printer and Controller of HMSO 2019. This work was produced by Rivas et al. under the terms of a commissioning contract issued by the Secretary of State for Health and Social Care. This issue may be freely reproduced for the purposes of private research and study and extracts (or indeed, the full report) may be included in professional journals provided that suitable acknowledgement is made and the reproduction is not associated with any form of advertising. Applications for commercial reproduction should be addressed to: NIHR Journals Library, National Institute for Health Research, Evaluation, Trials and Studies Coordinating Centre, Alpha House, University of Southampton Science Park, Southampton SO16 7NS, UK.)
- Published
- 2019
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32. Estimating Determinants of Attrition in Eating Disorder Communities on Twitter: An Instrumental Variables Approach.
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Wang T, Mentzakis E, Brede M, and Ianni A
- Subjects
- Humans, Social Networking, Data Collection methods, Feeding and Eating Disorders therapy, Medical Informatics methods, Public Health methods, Social Media
- Abstract
Background: The use of social media as a key health information source has increased steadily among people affected by eating disorders (EDs). Research has examined characteristics of individuals engaging in online communities, whereas little is known about discontinuation of engagement and the phenomenon of participants dropping out of these communities., Objective: This study aimed to investigate the characteristics of dropout behaviors among eating disordered individuals on Twitter and to estimate the causal effects of personal emotions and social networks on dropout behaviors., Methods: Using a snowball sampling method, we collected a set of individuals who self-identified with EDs in their Twitter profile descriptions, as well as their tweets and social networks, leading to 241,243,043 tweets from 208,063 users. Individuals' emotions are measured from their language use in tweets using an automatic sentiment analysis tool, and network centralities are measured from users' following networks. Dropout statuses of users are observed in a follow-up period 1.5 years later (from February 11, 2016 to August 17, 2017). Linear and survival regression instrumental variables models are used to estimate the effects of emotions and network centrality on dropout behaviors. The average levels of attributes among an individual's followees (ie, people who are followed by the individual) are used as instruments for the individual's attributes., Results: Eating disordered users have relatively short periods of activity on Twitter with one half of our sample dropping out at 6 months after account creation. Active users show more negative emotions and higher network centralities than dropped-out users. Active users tend to connect to other active users, whereas dropped-out users tend to cluster together. Estimation results suggest that users' emotions and network centralities have causal effects on their dropout behaviors on Twitter. More specifically, users with positive emotions are more likely to drop out and have shorter lasting periods of activity online than users with negative emotions, whereas central users in a social network have longer lasting participation than peripheral users. Findings on users' tweeting interests further show that users who attempt to recover from EDs are more likely to drop out than those who promote EDs as a lifestyle choice., Conclusions: Presence in online communities is strongly determined by the individual's emotions and social networks, suggesting that studies analyzing and trying to draw condition and population characteristics through online health communities are likely to be biased. Future research needs to examine in more detail the links between individual characteristics and participation patterns if better understanding of the entire population is to be achieved. At the same time, such attrition dynamics need to be acknowledged and controlled when designing online interventions so as to accurately capture their intended populations., (©Tao Wang, Emmanouil Mentzakis, Markus Brede, Antonella Ianni. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 26.04.2019.)
- Published
- 2019
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33. Social interactions in online eating disorder communities: A network perspective.
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Wang T, Brede M, Ianni A, and Mentzakis E
- Subjects
- Adolescent, Cluster Analysis, Humans, Language, Public Health, Social Behavior, Communication, Feeding and Eating Disorders psychology, Internet, Interpersonal Relations, Social Media, Social Support
- Abstract
Online health communities facilitate communication among people with health problems. Most prior studies focus on examining characteristics of these communities in sharing content, while limited work has explored social interactions between communities with different stances on a health problem. Here, we analyse a large communication network of individuals affected by eating disorders on Twitter and explore how communities of individuals with different stances on the disease interact online. Based on a large set of tweets posted by individuals who self-identify with eating disorders online, we establish the existence of two communities: a large community reinforcing disordered eating behaviours and a second, smaller community supporting efforts to recover from the disease. We find that individuals tend to mainly interact with others within the same community, with limited interactions across communities and inter-community interactions characterized by more negative emotions than intra-community interactions. Moreover, by studying the associations between individuals' behavioural characteristics and interpersonal connections in the communication network, we present the first large-scale investigation of social norms in online health communities, particularly on how a community approves of individuals' behaviours. Our findings shed new light on how people form online health communities and can have broad clinical implications on disease prevention and online intervention., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2018
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34. Body-weight and psychological well-being in the UK general population.
- Author
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Archangelidi O and Mentzakis E
- Subjects
- Body Mass Index, Diet statistics & numerical data, Female, Humans, Male, Meat, Middle Aged, Socioeconomic Factors, Surveys and Questionnaires, United Kingdom epidemiology, Body Weight, Emotional Adjustment
- Abstract
Background: While the consequences of body weight for physical health are well explored, the evidence for psychological well-being is less straightforward. An instrumental variable approach is used to address the endogenous relationship between body weight and well-being in the UK general population., Methods: Data from the Health Survey for England (2003, 2004 and 2006) are used to fit linear and ordered probit instrument variable models for a sample of 13 862 individuals, with frequent white meat consumption instrumenting for body-weight. Non-linearities in the relationship, robustness to weak instruments and relaxation of strict exogeneity assumption are further examined., Results: Accounting for endogeneity and conditional on health a protective effect on well-being is observed. A unit increase in body mass index (BMI) improves General Health Questionnaire (GHQ) by 0.17 (95% CI: 0.02-0.31) points and reduces the probability of reporting very low GHQ by 2.5% (95% CI: 0.01-0.05). Empirical testing showed that the instrument performs well, with increased meat consumption adding 0.58 points (95% CI: 0.42-0.74) to ones' BMI., Conclusions: We present support for the jolly-fat hypothesis, however, caution is recommended in drawing inferences. Further research needs to resolve the mixed findings in the literature.
- Published
- 2018
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35. External Validity of Contingent Valuation: Comparing Hypothetical and Actual Payments.
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Ryan M, Mentzakis E, Jareinpituk S, and Cairns J
- Subjects
- Financing, Personal economics, Humans, Surveys and Questionnaires, Commerce, Health Expenditures, Models, Economic, Uncertainty
- Abstract
Whilst contingent valuation is increasingly used in economics to value benefits, questions remain concerning its external validity that is do hypothetical responses match actual responses? We present results from the first within sample field test. Whilst Hypothetical No is always an Actual No, Hypothetical Yes exceed Actual Yes responses. A constant rate of response reversals across bids/prices could suggest theoretically consistent option value responses. Certainty calibrations (verbal and numerical response scales) minimise hypothetical-actual discrepancies offering a useful solution. Helping respondents resolve uncertainty may reduce the discrepancy between hypothetical and actual payments and thus lead to more accurate policy recommendations. Copyright © 2016 John Wiley & Sons, Ltd., (Copyright © 2016 John Wiley & Sons, Ltd.)
- Published
- 2017
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36. Efficiency and equity considerations in the preferences of health policy-makers in Israel.
- Author
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Shmueli A, Golan O, Paolucci F, and Mentzakis E
- Subjects
- Administrative Personnel standards, Age Factors, Decision Making ethics, Health Care Rationing economics, Health Care Rationing organization & administration, Health Care Rationing standards, Health Policy economics, Humans, Israel, Occupations statistics & numerical data, Policy Making, Social Justice economics, Surveys and Questionnaires, Administrative Personnel psychology, Choice Behavior, Efficiency, Organizational standards, Health Policy legislation & jurisprudence
- Abstract
Background: There is a traditional tension in public policy between the maximization of welfare from given resources (efficiency) and considerations related to the distribution of welfare among the population and to social justice (equity). The aim of this paper is to measure the relative weights of the efficiency- and equity-enhancing criteria in the preferences of health policy-makers in Israel, and to compare the Israeli results with those of other countries., Methods: We used the criteria of efficiency and equity which were adopted in a previous international study, adapted to Israel. The equity criteria, as defined in the international study, are: severity of the disease, age (young vs. elderly), and the extent to which the poor are subsidized. Efficiency is represented by the criteria: the potential number of beneficiaries, the extent of the health benefits to the patient, and the results of economic assessments (cost per QALY gained). We contacted 147 policy-makers, 65 of whom completed the survey (a response rate of 44%). Using Discrete Choice Experiment (DCE) methodology by 1000Minds software, we estimated the relative weights of these seven criteria, and predicted the desirability of technologies characterized by profiles of the criteria., Results: The overall weight attached to the four efficiency criteria was 46% and that of the three equity criteria was 54%. The most important criteria were "financing of the technology is required so that the poor will be able to receive it" and the level of individual benefit. "The technology is intended to be used by the elderly" criterion appeared as the least important, taking the seventh place. Policy-makers who had experience as members of the Basket Committee appear to prefer efficiency criteria more than those who had never participated in the Basket Committee deliberations. While the efficiency consideration gained preference in most countries studied, Israel is unique in its balance between the weights attached to equity and efficiency considerations by health policy-makers., Discussion: The study explored the trade-off between efficiency and equity considerations in the preferences of health policy-makers in Israel. The way these declarative preferences have been expressed in actual policy decisions remains to be explored.
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- 2017
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37. Comparative analysis of decision maker preferences for equity/efficiency attributes in reimbursement decisions in three European countries.
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Baji P, García-Goñi M, Gulácsi L, Mentzakis E, and Paolucci F
- Subjects
- Age Factors, Choice Behavior, Cost-Benefit Analysis, Europe, Guidelines as Topic, Health Care Rationing economics, Humans, Severity of Illness Index, Decision Making, Efficiency, Organizational, Health Care Rationing organization & administration
- Abstract
Background: In addition to cost-effectiveness, national guidelines often include other factors in reimbursement decisions. However, weights attached to these are rarely quantified, thus decisions can depend strongly on decision-maker preferences., Objective: To explore the preferences of policymakers and healthcare professionals involved in the decision-making process for different efficiency and equity attributes of interventions and to analyse cross-country differences., Method: Discrete choice experiments (DCEs) were carried out in Austria, Hungary, and Norway with policymakers and other professionals working in the health industry (N = 153 respondents). Interventions were described in terms of different efficiency and equity attributes (severity of disease, target age of the population and willingness to subsidise others, potential number of beneficiaries, individual health benefit, and cost-effectiveness). Parameter estimates from the DCE were used to calculate the probability of choosing a healthcare intervention with different characteristics, and to rank different equity and efficiency attributes according to their importance., Results: In all three countries, cost-effectiveness, individual health benefit and severity of the disease were significant and equally important determinants of decisions. All countries show preferences for interventions targeting young and middle aged populations compared to those targeting populations over 60. However, decision-makers in Austria and Hungary show preferences more oriented to efficiency than equity, while those in Norway show equal preferences for equity and efficiency attributes., Conclusion: We find that factors other than cost-effectiveness seem to play an equally important role in decision-making. We also find evidence of cross-country differences in the weight of efficiency and equity attributes.
- Published
- 2016
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38. Psychological Distress and Problem Drinking.
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Mentzakis E, Roberts B, Suhrcke M, and McKee M
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- Adolescent, Adult, Aged, Aged, 80 and over, Alcohol-Related Disorders psychology, Causality, Cross-Sectional Studies, Female, Health Status, Humans, Male, Middle Aged, Socioeconomic Factors, Stress, Psychological psychology, USSR epidemiology, Young Adult, Advertising statistics & numerical data, Alcohol-Related Disorders epidemiology, Mental Health, Stress, Psychological epidemiology
- Abstract
We examine the influence of harmful alcohol use on mental health using a flexible two-step instrumental variables approach and household survey data from nine countries of the former Soviet Union. Using alcohol advertisements to instrument for alcohol, we show that problem drinking has a large detrimental effect on psychological distress, with problem drinkers exhibiting a 42% increase in the number of mental health problems reported and a 15% higher chance of reporting very poor mental health. Ignoring endogeneity leads to an underestimation of the damaging effect of excessive drinking. Findings suggest that more effective alcohol policies and treatment services in the former Soviet Union may have added benefits in terms of reducing poor mental health., (Copyright © 2015 John Wiley & Sons, Ltd.)
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- 2016
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39. Equity and efficiency preferences of health policy makers in China--a stated preference analysis.
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Paolucci F, Mentzakis E, Defechereux T, and Niessen LW
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- China, Cost-Benefit Analysis, Decision Making, Delivery of Health Care economics, Delivery of Health Care organization & administration, Health Policy economics, Policy Making
- Abstract
Background: Macroeconomic growth in China enables significant progress in health care and public health. It faces difficult choices regarding access, quality and affordability, while dealing with the increasing burden of chronic diseases. Policymakers are pressured to make complex decisions while implementing health strategies. This study shows how this process could be structured and reports the specific equity and efficiency preferences among Chinese policymakers., Methods: In total, 78 regional, provincial and national level policymakers with considerable experience participated in a discrete choice experiment, weighting the relative importance of six policy attributes describing equity and efficiency. Results from a conditional logistic model are presented for the six criteria, measuring the associated weights. Observed and unobserved heterogeneities were incorporated and tested in the model. Findings are used to give an example of ranking health interventions in relation to the present disease burden in China., Results: In general, respondents showed strong preference for efficiency criteria i.e. total beneficiaries and cost-effectiveness as the most important attributes in decision making over equity criteria. Hence, priority interventions would be those conditions that are most prevalent in the country and cost least per health gain., Conclusion: Although efficiency criteria override equity ones, major health threats in China would be targeted. Multicriteria decision analysis makes explicit important trade-offs between efficiency and equity, leading to explicit, transparent and rational policy making., (Published by Oxford University Press in association with The London School of Hygiene and Tropical Medicine © The Author 2014; all rights reserved.)
- Published
- 2015
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40. Public acceptability of population-level interventions to reduce alcohol consumption: a discrete choice experiment.
- Author
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Pechey R, Burge P, Mentzakis E, Suhrcke M, and Marteau TM
- Subjects
- Adolescent, Adult, Advertising legislation & jurisprudence, Alcohol Drinking psychology, Alcoholic Beverages economics, Choice Behavior, Commerce statistics & numerical data, Female, Humans, Male, Middle Aged, Socioeconomic Factors, United Kingdom, Young Adult, Alcohol Drinking prevention & control, Health Policy, Public Opinion
- Abstract
Public acceptability influences policy action, but the most acceptable policies are not always the most effective. This discrete choice experiment provides a novel investigation of the acceptability of different interventions to reduce alcohol consumption and the effect of information on expected effectiveness, using a UK general population sample of 1202 adults. Policy options included high, medium and low intensity versions of: Minimum Unit Pricing (MUP) for alcohol; reducing numbers of alcohol retail outlets; and regulating alcohol advertising. Outcomes of interventions were predicted for: alcohol-related crimes; alcohol-related hospital admissions; and heavy drinkers. First, the models obtained were used to predict preferences if expected outcomes of interventions were not taken into account. In such models around half of participants or more were predicted to prefer the status quo over implementing outlet reductions or higher intensity MUP. Second, preferences were predicted when information on expected outcomes was considered, with most participants now choosing any given intervention over the status quo. Acceptability of MUP interventions increased by the greatest extent: from 43% to 63% preferring MUP of £1 to the status quo. Respondents' own drinking behaviour also influenced preferences, with around 90% of non-drinkers being predicted to choose all interventions over the status quo, and with more moderate than heavy drinkers favouring a given policy over the status quo. Importantly, the study findings suggest public acceptability of alcohol interventions is dependent on both the nature of the policy and its expected effectiveness. Policy-makers struggling to mobilise support for hitherto unpopular but promising policies should consider giving greater prominence to their expected outcomes., (Copyright © 2014 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2014
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41. Priority setting in the Austrian healthcare system: results from a discrete choice experiment and implications for mental health.
- Author
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Mentzakis E, Paolucci F, and Rubicko G
- Subjects
- Age Factors, Austria, Cost-Benefit Analysis, Delivery of Health Care economics, Efficiency, Organizational, Female, Health Care Rationing organization & administration, Health Priorities economics, Humans, Male, Mental Disorders economics, Mental Health Services economics, Severity of Illness Index, Sex Factors, Choice Behavior, Delivery of Health Care organization & administration, Health Priorities organization & administration, Mental Disorders therapy, Mental Health Services organization & administration
- Abstract
Background: The impact of mental conditions is expected to be among the highest ranked causes of illness in high income countries by 2020. With changing health needs, policy makers have to make choices in an environment with increasingly constrained resources and competing demands. Discrete choice experiments have been identified as a useful approach to inform and support decision-making in health care systems and, in particular, its rationing., Methods: Policymakers, researchers and health practitioners from Austria participated in an experiment designed to elicit preferences for efficiency and equity in a generic priority setting framework. Using aggregate criteria an empirical measure of the efficiency/equity trade-off is calculated and a selection of health care interventions, including mental health, are ranked in composite league tables (CLTs)., Results: With the exception of severity of the condition, all equity parameters decrease attractiveness of an intervention, whereas the opposite holds for all three efficiency criteria. The efficiency/equity ratio (i.e. decision-makers' preference for efficiency over equity) is 3.5 and 5 for interventions targeted at younger and middle age populations, respectively, while for older populations this ratio is negative implying a rejection of all equity criteria. Irrespective of such differences interventions targeting mental health rank highly on all CLTs., Conclusion: Based on system-wide generic decision making criteria, mental health is shown to be a top priority for Austria. Preference-based approaches might offer complementary information to policymakers in priority setting decisions and a useful tool to support rationale rather than ad hoc decision-making.
- Published
- 2014
42. Estimating the causal effect of alcohol consumption on well-being for a cross-section of 9 former Soviet Union countries.
- Author
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Mentzakis E, Suhrcke M, Roberts B, Murphy A, and McKee M
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Residence Characteristics statistics & numerical data, USSR epidemiology, Young Adult, Alcohol Drinking epidemiology, Happiness, Personal Satisfaction, Quality of Life psychology
- Abstract
While the adverse health and economic consequences attributable to alcohol consumption are widely acknowledged, its impact on psychological wellbeing is less well understood. This is to a large extent due to the challenge of establishing causal effects of alcohol consumption when using standard single-equation econometric analyses. Using a unique dataset collected in 2010/11 of 18,000 individuals and also community characteristics from nine countries of the former Soviet Union, a region with a major burden of alcohol related ill health, we address this problem by employing an instrumental variable approach to identify any causal effects of alcohol consumption on mental well-being. The availability of 24-h alcohol sales outlets in the neighbourhood of the individuals is used as an instrument, based on theoretical reasoning and statistical testing of its validity. We find that increased alcohol consumption decreases well-being and that ignoring endogeneity leads to underestimation of this effect. This finding adds a further and previously under-appreciated dimension to the expected benefits that could be achieved with more effective alcohol policy in this region., (Copyright © 2013 Elsevier Ltd. All rights reserved.)
- Published
- 2013
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43. Health-related externalities: evidence from a choice experiment.
- Author
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Hurley J and Mentzakis E
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Cost-Benefit Analysis, Female, Humans, Interpersonal Relations, Male, Middle Aged, Social Values, Young Adult, Altruism, Choice Behavior, Consumer Behavior, Delivery of Health Care
- Abstract
Health-related external benefits are of potentially large importance for public policy. This paper investigates health-related external benefits using a stated-preference discrete-choice experiment framed in a health care context and including choice scenarios defined by six attributes related to a recipient and the recipient's condition: communicability, severity, medical necessity, relationship to respondent, location, and amount of contribution requested. Subjects also completed a set of own-treatment scenarios and a values-orientation instrument. We find evidence of substantial health-related external benefits that vary as expected with the scenario attributes and subjects' value orientations. The results are consistent with a number of hypotheses offered by the general theoretical analysis of health-related externalities and the analysis of externalities specific to health care., (Copyright © 2013 Elsevier B.V. All rights reserved.)
- Published
- 2013
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44. Do canadian researchers and the lay public prioritize biomedical research outcomes equally? A choice experiment.
- Author
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Miller FA, Mentzakis E, Axler R, Lehoux P, French M, Tarride JE, Wodchis WP, Wilson BJ, Longo C, Bytautas JP, and Slater B
- Subjects
- Adult, Canada, Choice Behavior, Cross-Sectional Studies, Female, Humans, Male, Socioeconomic Factors, Surveys and Questionnaires, Biomedical Research organization & administration, Health Priorities organization & administration, Patient Participation psychology, Public Opinion, Research Personnel psychology
- Abstract
Purpose: To quantify and compare the preferences of researchers and laypeople in Canada regarding the outcomes of basic biomedical research., Method: In autumn 2010, the authors conducted a cross-sectional, national survey of basic biomedical researchers funded by Canada's national health research agency and a representative sample of Canadian citizens to assess preferences for research outcomes across five attributes using a discrete choice experiment. Attributes included advancing scientific knowledge (assessed by published papers); building research capacity (assessed by trainees); informing decisions in the health products industry (assessed by patents); targeting economic, health, or scientific priorities; and cost. The authors reduced a fractional factorial design (18 pairwise choices plus an opt-out option) to three blocks of six. They also computed part worth utilities, differences in predicted probabilities, and willingness-to-pay values using nested logit models., Results: Of 3,260 potential researchers, 1,749 (53.65% response rate) completed the questionnaire, along with 1,002 citizens. Researchers and citizens prioritized high-quality scientific outcomes (papers, trainees) over other attributes. Both groups disvalued research targeted at economic priorities relative to health priorities. Researchers granted a premium to proposals targeting scientific priorities., Conclusions: Citizens and researchers fundamentally prioritized the same outcomes for basic biomedical research. Notably, they prioritized traditional scientific outcomes and disvalued the pursuit of economic returns. These findings have implications for how academic medicine assigns incentives and value to basic health research and how biomedical researchers and the public may jointly contribute to setting the future research agenda.
- Published
- 2013
- Full Text
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45. Decision-making criteria among national policymakers in five countries: a discrete choice experiment eliciting relative preferences for equity and efficiency.
- Author
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Mirelman A, Mentzakis E, Kinter E, Paolucci F, Fordham R, Ozawa S, Ferraz M, Baltussen R, and Niessen LW
- Subjects
- Brazil, Cuba, Humans, Logistic Models, Nepal, Norway, Surveys and Questionnaires, Uganda, Administrative Personnel, Choice Behavior, Delivery of Health Care standards, Efficiency, Organizational, Health Policy, Healthcare Disparities, Policy Making
- Abstract
Background: Worldwide, there is a need for formalization of the priority setting processes in health. Recent research has used the term multicriteria decision analysis for methods that systematically include preferences for both equity and efficiency. The present study compares decision-makers' preferences at the country level for a set of equity and efficiency criteria according to a multicriteria decision analysis framework., Methods: Discrete choice experiments were conducted for Brazil, Cuba, Nepal, Norway, and Uganda. By using standardized methods, we elicited preferences for intervention attributes using a individual choice questionnaire. A multinomial logistic regression was applied to estimate the coefficients for all single-policy criteria, per country. Attributes were assigned to an equity group or to an efficiency group. After testing for scale variance, predicted probabilities for interventions with both types of attributes were compared across countries., Results: The Norway and Nepal groups showed considerable preferences for efficiency criteria over equity criteria with percent change in respective predicted sum probabilities of [10%, -84%] and [6%, -79%]. Brazil and Uganda also showed preference for the efficiency criteria though less convincingly ([-34%, -93%], [-18%, -63%], respectively). The Cuban group showed the strongest preferences with equity attributes dominating efficiency ([-52%, 213%])., Conclusions: Group preferences of policymakers show explicit but varying trade-offs of efficiency and equity in these diverse settings. This multicriteria decision analysis approach, using discrete choice experiments, indicates that systematic setting of health priorities is possible across a variety of countries. It may be a valuable tool to guide health reform initiatives., (Copyright © 2012 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.)
- Published
- 2012
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46. Using discrete choice experiments to value informal care tasks: exploring preference heterogeneity.
- Author
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Mentzakis E, Ryan M, and McNamee P
- Subjects
- Activities of Daily Living, Age Factors, Costs and Cost Analysis, Delivery of Health Care economics, Female, Humans, Male, Middle Aged, Surveys and Questionnaires, Caregivers economics, Choice Behavior, Models, Statistical, Patient Care economics
- Abstract
While informal care is a significant part of non-market economic activity, its value is rarely acknowledged, perhaps reflecting a lack of market data. Traditional methods to value such care include opportunity and replacement cost. This study is the first to employ the discrete choice experiment methodology to value informal care tasks. A monetary value is estimated for three tasks (personal care, supervising and household tasks). The relationship between time spent on formal and informal care is also modelled and preference heterogeneity investigated using the Latent Class Model. Complementarity between supervising tasks and formal care is observed. Monetary compensation is important, with willingness to accept per hour values ranging from £0.38 to £0.83 for personal care, £0.75 for supervising and £0.31 to £0.6 for household tasks. Heterogeneity in preferences is observed, with monetary compensation being important for younger people, but insignificant for older individuals. Such heterogeneity is important at the policy level. Values are lower than those generated by opportunity cost and replacement cost methods, perhaps because of the limited ability of revealed preference methods to capture broader aspect of utility. Differences with contingent valuation methods are also observed, suggesting future research should investigate the external validity of the different methods., (Copyright © 2010 John Wiley & Sons, Ltd.)
- Published
- 2011
- Full Text
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47. Allowing for heterogeneity in monetary subjective well-being valuations.
- Author
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Mentzakis E
- Subjects
- Humans, Linear Models, Models, Econometric, Socioeconomic Factors, United Kingdom, Attitude to Health, Happiness, Health Status, Quality of Life
- Abstract
Recent research on 'happiness' regression equations has shown how monetary values can be put on the well-being effects of many life events (like health problems, marriage or the death of a spouse). Potentially, such work has practical implications for policy-makers and the courts. However, this article argues that we need to be careful in such work to use the appropriate statistical method. It goes beyond previous research and allows for heterogeneity in the subjective well-being scales. Using less restrictive models than the current literature, the article argues that standard linear or ordered response models seem consistently to overstate valuations. With data from the UK, it provides new monetary estimates of the well-being consequences of a number of health problems, social capital indicators, marital status changes and social relationships., (Copyright © 2010 John Wiley & Sons, Ltd.)
- Published
- 2011
- Full Text
- View/download PDF
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