1,420 results on '"Vassall A"'
Search Results
52. Estimation of potential social support requirement for tuberculosis patients in India.
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Chatterjee, Susmita, Stallworthy, Guy, Das, Palash, and Vassall, Anna
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INDIAN rupee ,ECONOMIC impact ,TUBERCULOSIS patients ,END of treatment ,BANKING industry - Abstract
Providing social support to tuberculosis (TB) patients is a recommended strategy as households having TB patients find themselves in a spiral of poverty because of high cost, huge income loss and several other economic consequences associated with TB treatment. However, there are few examples of social support globally. The Indian government introduced the 'Nikshay Poshan Yojana' scheme in 2018 to provide nutritional support for all registered TB patients. A financial incentive of 500 Indian Rupee (6 United States Dollars) per month was proposed to be transferred directly to the registered beneficiaries' validated bank accounts. We examined the reach, timing, amount of benefit receipt and the extent to which the benefit alleviated catastrophic costs (used as a proxy to measure the impact on permanent economic welfare as catastrophic cost is the level of cost that is likely to result in a permanent negative economic impact on households) by interviewing 1482 adult drug-susceptible TB patients from 16 districts of four states during 2019 to 2023, using the methods recommended by the World Health Organization for estimating household costs of TB nationally. We also estimated the potential amount of social support required to achieve a zero catastrophic cost target. At the end of treatment, 31–54% of study participants received the benefit. In all, 34–60% of TB patients experienced catastrophic costs using different estimation methods and the benefit helped 2% of study participants to remain below the catastrophic cost threshold. A uniform benefit amount of Indian Rupee 10 000 (127 United States Dollars) for 6 months of treatment could reduce the incidence of catastrophic costs by 43%. To improve the economic welfare of TB patients, levels of benefit need to be substantially increased, which will have considerable budgetary impact on the TB programme. Hence, a targeted rather than universal approach may be considered. To maximize impact, at least half of the revised amount should be given immediately after treatment registration. [ABSTRACT FROM AUTHOR]
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- 2024
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53. Journey of the tuberculosis patients in India from onset of symptom till one-year post-treatment.
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Susmita Chatterjee, Palash Das, Aaron Shikhule, Radha Munje, and Anna Vassall
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Public aspects of medicine ,RA1-1270 - Abstract
Historically, economic studies on tuberculosis estimated out-of-pocket expenses related to tuberculosis treatment and catastrophic cost, however, no study has yet been conducted to understand the post-treatment economic conditions of the tuberculosis patients in India. In this paper, we add to this body of knowledge by examining the experiences of the tuberculosis patients from the onset of symptoms till one-year post-treatment. 829 adult drug-susceptible tuberculosis patients from general population and from two high risk groups: urban slum dwellers and tea garden families were interviewed during February 2019 to February 2021 at their intensive and continuation phases of treatment and about one-year post-treatment using adapted World Health Organization tuberculosis patient cost survey instrument. Interviews covered socio-economic conditions, employment status, income, out-of-pocket expenses and time spent for outpatient visits, hospitalization, drug-pick up, medical follow-ups, additional food, coping strategies, treatment outcome, identification of post-treatment symptoms and treatment for post-treatment sequalae/recurrent cases. All costs were calculated in 2020 Indian rupee (INR) and converted into US dollar (US$) (1 US$ = INR 74.132). Total cost of tuberculosis treatment since the onset of symptom till one-year post-treatment ranged from US$359 (Standard Deviation (SD) 744) to US$413 (SD 500) of which 32%-44% of costs incurred in pre-treatment phase and 7% in post-treatment phase. 29%-43% study participants reported having outstanding loan with average amount ranged from US $103 to US$261 during the post-treatment period. 20%-28% participants borrowed during post-treatment period and 7%-16% sold/mortgaged personal belongings. Therefore, economic impact of tuberculosis persists way beyond treatment completion. Major reasons of continued hardship were costs associated with initial tuberculosis treatment, unemployment, and reduced income. Therefore, policy priorities to reduce treatment cost and to protect patients from the economic consequences of the disease by ensuring job security, additional food support, better management of direct benefit transfer and improving coverage through medical insurances need consideration.
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- 2023
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54. Cost-effectiveness of tuberculosis infection prevention and control interventions in South African clinics: a model-based economic evaluation informed by complexity science methods
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Richard G White, Karina Kielmann, Karin Diaconu, Anna Vassall, Alison D Grant, Fiammetta Maria Bozzani, Nicky McCreesh, and Indira Govender
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Introduction Nosocomial Mycobacterium tuberculosis (Mtb) transmission substantially impacts health workers, patients and communities. Guidelines for tuberculosis infection prevention and control (TB IPC) exist but implementation in many settings remains suboptimal. Evidence is needed on cost-effective investments to prevent Mtb transmission that are feasible in routine clinic environments.Methods A set of TB IPC interventions was codesigned with local stakeholders using system dynamics modelling techniques that addressed both core activities and enabling actions to support implementation. An economic evaluation of these interventions was conducted at two clinics in KwaZulu-Natal, employing agent-based models of Mtb transmission within the clinics and in their catchment populations. Intervention costs included the costs of the enablers (eg, strengthened supervision, community sensitisation) identified by stakeholders to ensure uptake and adherence.Results All intervention scenarios modelled, inclusive of the relevant enablers, cost less than US$200 per disability-adjusted life-year (DALY) averted and were very cost-effective in comparison to South Africa’s opportunity cost-based threshold (US$3200 per DALY averted). Two interventions, building modifications to improve ventilation and maximising use of the existing Central Chronic Medicines Dispensing and Distribution system to reduce the number of clinic attendees, were found to be cost saving over the 10-year model time horizon. Incremental cost-effectiveness ratios were sensitive to assumptions on baseline clinic ventilation rates, the prevalence of infectious TB in clinic attendees and future HIV incidence but remained highly cost-effective under all uncertainty analysis scenarios.Conclusion TB IPC interventions in clinics, including the enabling actions to ensure their feasibility, afford very good value for money and should be prioritised for implementation within the South African health system.
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- 2023
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55. What, how and who: Cost-effectiveness analyses of COVID-19 vaccination to inform key policies in Nigeria.
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Francis J Ruiz, Sergio Torres-Rueda, Carl A B Pearson, Eleanor Bergren, Chinyere Okeke, Simon R Procter, Andres Madriz-Montero, Mark Jit, Anna Vassall, and Benjamin S C Uzochukwu
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Public aspects of medicine ,RA1-1270 - Abstract
While safe and efficacious COVID-19 vaccines have achieved high coverage in high-income settings, roll-out remains slow in sub-Saharan Africa. By April 2022, Nigeria, a country of over 200 million people, had only distributed 34 million doses. To ensure the optimal use of health resources, cost-effectiveness analyses can inform key policy questions in the health technology assessment process. We carried out several cost-effectiveness analyses exploring different COVID-19 vaccination scenarios in Nigeria. In consultation with Nigerian stakeholders, we addressed three key questions: what vaccines to buy, how to deliver them and what age groups to target. We combined an epidemiological model of virus transmission parameterised with Nigeria specific data with a costing model that incorporated local resource use assumptions and prices, both for vaccine delivery as well as costs associated with care and treatment of COVID-19. Scenarios of vaccination were compared with no vaccination. Incremental cost-effectiveness ratios were estimated in terms of costs per disability-adjusted life years averted and compared to commonly used cost-effectiveness ratios. Viral vector vaccines are cost-effective (or cost saving), particularly when targeting older adults. Despite higher efficacy, vaccines employing mRNA technologies are less cost-effective due to high current dose prices. The method of delivery of vaccines makes little difference to the cost-effectiveness of the vaccine. COVID-19 vaccines can be highly effective and cost-effective (as well as cost-saving), although an important determinant of the latter is the price per dose and the age groups prioritised for vaccination. From a health system perspective, viral vector vaccines may represent most cost-effective choices for Nigeria, although this may change with price negotiation.
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- 2023
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56. Is there a role for RDTs as we live with COVID-19? An assessment of different strategies
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Mark Jit, Anna Vassall, and Gabrielle Bonnet
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Introduction By 2022, high levels of past COVID-19 infections, combined with substantial levels of vaccination and the development of Omicron, have shifted country strategies towards burden reduction policies. SARS-CoV-2 rapid antigen tests (rapid diagnostic tests (RDTs)) could contribute to these policies by helping rapidly detect, isolate and/or treat infections in different settings. However, the evidence to inform RDT policy choices in low and middle-income countries (LMICs) is limited.Method We provide an overview of the potential impact of several RDT use cases (surveillance; testing, tracing and isolation without and with surveillance; hospital-based screening to reduce nosocomial COVID-19; and testing to enable earlier/expanded treatment) for a range of country settings. We use conceptual models and literature review to identify which use cases are likely to bring benefits and how these may change with outbreak characteristics. Impacts are measured through multiple outcomes related to gaining time, reducing the burden on the health system and reducing deaths.Results In an optimal scenario in terms of resources and capacity and with baseline parameters, we find marginal time gains of 4 days or more through surveillance and testing tracing and isolation with surveillance, a reduction in peak intensive care unit (ICU) or ICU admissions by 5% or more (hospital-based screening; testing, tracing and isolation) and reductions in COVID-19 deaths by over 6% (hospital-based screening; test and treat). Time gains may be used to strengthen ICU capacity and/or boost vulnerable individuals, though only a small minority of at-risk individuals could be reached in the time available. The impact of RDTs declines with lower country resources and capacity, more transmissible or immune-escaping variants and reduced test sensitivity.Conclusion RDTs alone are unlikely to dramatically reduce the burden of COVID-19 in LMICs, though they may have an important role alongside other interventions such as vaccination, therapeutic drugs, improved healthcare capacity and non-pharmaceutical measures.
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- 2023
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57. Inclusion of Additional Unintended Consequences in Economic Evaluation: A Systematic Review of Immunization and Tuberculosis Cost-Effectiveness Analyses
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Nymark, Liv Solvår, Miller, Alex, and Vassall, Anna
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- 2021
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58. Models of COVID-19 vaccine prioritisation: a systematic literature search and narrative review
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Nuru Saadi, Y-Ling Chi, Srobana Ghosh, Rosalind M. Eggo, Ciara V. McCarthy, Matthew Quaife, Jeanette Dawa, Mark Jit, and Anna Vassall
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COVID-19, Vaccination, Mathematical modelling ,Medicine - Abstract
Abstract Background How best to prioritise COVID-19 vaccination within and between countries has been a public health and an ethical challenge for decision-makers globally. We reviewed epidemiological and economic modelling evidence on population priority groups to minimise COVID-19 mortality, transmission, and morbidity outcomes. Methods We searched the National Institute of Health iSearch COVID-19 Portfolio (a database of peer-reviewed and pre-print articles), Econlit, the Centre for Economic Policy Research, and the National Bureau of Economic Research for mathematical modelling studies evaluating the impact of prioritising COVID-19 vaccination to population target groups. The first search was conducted on March 3, 2021, and an updated search on the LMIC literature was conducted from March 3, 2021, to September 24, 2021. We narratively synthesised the main study conclusions on prioritisation and the conditions under which the conclusions changed. Results The initial search identified 1820 studies and 36 studies met the inclusion criteria. The updated search on LMIC literature identified 7 more studies. 43 studies in total were narratively synthesised. 74% of studies described outcomes in high-income countries (single and multi-country). We found that for countries seeking to minimise deaths, prioritising vaccination of senior adults was the optimal strategy and for countries seeking to minimise cases the young were prioritised. There were several exceptions to the main conclusion, notably that reductions in deaths could be increased if groups at high risk of both transmission and death could be further identified. Findings were also sensitive to the level of vaccine coverage. Conclusion The evidence supports WHO SAGE recommendations on COVID-19 vaccine prioritisation. There is, however, an evidence gap on optimal prioritisation for low- and middle-income countries, studies that included an economic evaluation, and studies that explore prioritisation strategies if the aim is to reduce overall health burden including morbidity.
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- 2021
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59. Considering equity in priority setting using transmission models: Recommendations and data needs
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M. Quaife, GF Medley, M. Jit, T. Drake, M. Asaria, P. van Baal, R. Baltussen, L. Bollinger, F. Bozzani, O. Brady, H. Broekhuizen, K. Chalkidou, Y.-L. Chi, DW Dowdy, S. Griffin, H. Haghparast-Bidgoli, T. Hallett, K. Hauck, TD Hollingsworth, CF McQuaid, NA Menzies, MW Merritt, A. Mirelman, A. Morton, FJ Ruiz, M. Siapka, J. Skordis, F. Tediosi, P. Walker, RG White, P. Winskill, A. Vassall, and GB Gomez
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Transmission modelling ,Health economics ,Equity ,Cost-effectiveness analysis ,Priority ,Setting ,Infectious and parasitic diseases ,RC109-216 - Abstract
Objectives: Disease transmission models are used in impact assessment and economic evaluations of infectious disease prevention and treatment strategies, prominently so in the COVID-19 response. These models rarely consider dimensions of equity relating to the differential health burden between individuals and groups. We describe concepts and approaches which are useful when considering equity in the priority setting process, and outline the technical choices concerning model structure, outputs, and data requirements needed to use transmission models in analyses of health equity. Methods: We reviewed the literature on equity concepts and approaches to their application in economic evaluation and undertook a technical consultation on how equity can be incorporated in priority setting for infectious disease control. The technical consultation brought together health economists with an interest in equity-informative economic evaluation, ethicists specialising in public health, mathematical modellers from various disease backgrounds, and representatives of global health funding and technical assistance organisations, to formulate key areas of consensus and recommendations. Results: We provide a series of recommendations for applying the Reference Case for Economic Evaluation in Global Health to infectious disease interventions, comprising guidance on 1) the specification of equity concepts; 2) choice of evaluation framework; 3) model structure; and 4) data needs. We present available conceptual and analytical choices, for example how correlation between different equity- and disease-relevant strata should be considered dependent on available data, and outline how assumptions and data limitations can be reported transparently by noting key factors for consideration. Conclusions: Current developments in economic evaluations in global health provide a wide range of methodologies to incorporate equity into economic evaluations. Those employing infectious disease models need to use these frameworks more in priority setting to accurately represent health inequities. We provide guidance on the technical approaches to support this goal and ultimately, to achieve more equitable health policies.
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- 2022
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60. Catastrophic costs for tuberculosis patients in India: Impact of methodological choices
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Chatterjee, Susmita, primary, Das, Palash, additional, Stallworthy, Guy, additional, Bhambure, Gayatri, additional, Munje, Radha, additional, and Vassall, Anna, additional
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- 2024
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61. The epidemiological and economic burden of diabetes in Ghana: A scoping review to inform health technology assessment
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Kazibwe, Joseph, primary, Gad, Mohamed, additional, Abassah-Konadu, Emmanuella, additional, Amankwah, Ivy, additional, Owusu, Richmond, additional, Gulbi, Godwin, additional, Torres-Rueda, Sergio, additional, Asare, Brian, additional, Vassall, Anna, additional, and Ruiz, Francis, additional
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- 2024
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62. Costing of Essential Health Service Packages: A Systematic Review of Methods From Developing Economies
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Jeet, Gursimer, Masaki, Emiko, Vassall, Anna, and Prinja, Shankar
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- 2021
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63. Investing in the health of girls and women : a best buy for sustainable development
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Remme, Michelle, Vassall, Anna, Fernando, Gabriela, and Bloom, David E
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- 2020
64. Pablo Goetz
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Vassall-Adams, Guy and Wilson, Mark H
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- 2020
65. The potential health and economic value of SARS-CoV-2 vaccination alongside physical distancing in the UK: a transmission model-based future scenario analysis and economic evaluation
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Sun, Fiona Yueqian, Villabona-Arenas, C Julian, Nightingale, Emily S, Showering, Alicia, Knight, Gwenan M, Sherratt, Katharine, Liu, Yang, Abbas, Kaja, Funk, Sebastian, Endo, Akira, Hellewell, Joel, Rosello, Alicia, Lowe, Rachel, Quaife, Matthew, Gimma, Amy, Brady, Oliver, Williams, Jack, Procter, Simon R, Eggo, Rosalind M, Chan, Yung-Wai Desmond, Munday, James D, Barnard, Rosanna C, Gore-Langton, Georgia R, Bosse, Nikos I, Waterlow, Naomi R, Diamond, Charlie, Russell, Timothy W, Medley, Graham, Flasche, Stefan, Atkins, Katherine E, Prem, Kiesha, Simons, David, Auzenbergs, Megan, Tully, Damien C, Jarvis, Christopher I, van Zandvoort, Kevin, Abbott, Sam, Pearson, Carl A B, Jombart, Thibaut, Meakin, Sophie R, Foss, Anna M, Kucharski, Adam J, Quilty, Billy J, Gibbs, Hamish P, Clifford, Samuel, Klepac, Petra, Sandmann, Frank G, Davies, Nicholas G, Vassall, Anna, Edmunds, W John, and Jit, Mark
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- 2021
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66. Building resource constraints and feasibility considerations in mathematical models for infectious disease: A systematic literature review
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Bozzani, Fiammetta M., Vassall, Anna, and Gomez, Gabriela B.
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- 2021
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67. Visual Influences on Auditory Behavioral, Neural, and Perceptual Processes: A Review
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Opoku-Baah, Collins, Schoenhaut, Adriana M., Vassall, Sarah G., Tovar, David A., Ramachandran, Ramnarayan, and Wallace, Mark T.
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- 2021
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68. Effectiveness and cost-effectiveness of a transdiagnostic intervention for alcohol misuse and psychological distress in humanitarian settings:study protocol for a randomised controlled trial in Uganda
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van der Boor, Catharina F., Taban, Dalili, Tol, Wietse A., Akellot, Josephine, Neuman, Melissa, Weiss, Helen A., Greco, Giulia, Vassall, Anna, May, Carl, Nadkarni, Abhijit, Kinyanda, Eugene, Roberts, Bayard, Fuhr, Daniela C., van der Boor, Catharina F., Taban, Dalili, Tol, Wietse A., Akellot, Josephine, Neuman, Melissa, Weiss, Helen A., Greco, Giulia, Vassall, Anna, May, Carl, Nadkarni, Abhijit, Kinyanda, Eugene, Roberts, Bayard, and Fuhr, Daniela C.
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Background The war in South Sudan has displaced more than four million people, with Uganda hosting the largest number of South Sudanese refugees. Research in Uganda has shown elevated levels of alcohol misuse and psychological distress among these refugees. The World Health Organization (WHO) has developed a trans-diagnostic scalable psychological intervention called Problem Management Plus (PM +) to reduce psychological distress among populations exposed to adversities. Our study aims to evaluate the effectiveness and cost-effectiveness of the CHANGE intervention, which builds on PM + , to also address alcohol misuse through problem-solving therapy and selected behavioural strategies for dealing with alcohol use disorders. We hypothesise that the CHANGE intervention together with enhanced usual care (EUC) will be superior to EUC alone in increasing the percentage of days abstinent. Methods A parallel-arm individually randomised controlled trial will be conducted in the Rhino Camp and Imvepi settlements in Uganda. Five hundred adult male South Sudanese refugees with (i) elevated levels of alcohol use (between 8 and 20 on the Alcohol Use Disorder Identification Test [AUDIT]); and (ii) psychological distress (> 16 on the Kessler Psychological Distress Scale) will be randomly assigned 1:1 to EUC or CHANGE and EUC. CHANGE will be delivered by lay healthcare providers over 6 weeks. Outcomes will be assessed at 3 and 12 months post-randomisation. The primary outcome is the percentage of days abstinent, measured by the timeline follow-back measure at 3 months. Secondary outcomes include percentage of days abstinent at 12 months and alcohol misuse (measured by the AUDIT), psychological distress (i.e. depression, anxiety, posttraumatic stress disorder), functional disability, perpetration of intimate partner violence, and health economic indicators at 3 and 12 months. A mixed-methods process evaluation will investigate competency, dose, fidelity, feasibil, Background: The war in South Sudan has displaced more than four million people, with Uganda hosting the largest number of South Sudanese refugees. Research in Uganda has shown elevated levels of alcohol misuse and psychological distress among these refugees. The World Health Organization (WHO) has developed a trans-diagnostic scalable psychological intervention called Problem Management Plus (PM +) to reduce psychological distress among populations exposed to adversities. Our study aims to evaluate the effectiveness and cost-effectiveness of the CHANGE intervention, which builds on PM +, to also address alcohol misuse through problem-solving therapy and selected behavioural strategies for dealing with alcohol use disorders. We hypothesise that the CHANGE intervention together with enhanced usual care (EUC) will be superior to EUC alone in increasing the percentage of days abstinent. Methods: A parallel-arm individually randomised controlled trial will be conducted in the Rhino Camp and Imvepi settlements in Uganda. Five hundred adult male South Sudanese refugees with (i) elevated levels of alcohol use (between 8 and 20 on the Alcohol Use Disorder Identification Test [AUDIT]); and (ii) psychological distress (> 16 on the Kessler Psychological Distress Scale) will be randomly assigned 1:1 to EUC or CHANGE and EUC. CHANGE will be delivered by lay healthcare providers over 6 weeks. Outcomes will be assessed at 3 and 12 months post-randomisation. The primary outcome is the percentage of days abstinent, measured by the timeline follow-back measure at 3 months. Secondary outcomes include percentage of days abstinent at 12 months and alcohol misuse (measured by the AUDIT), psychological distress (i.e. depression, anxiety, posttraumatic stress disorder), functional disability, perpetration of intimate partner violence, and health economic indicators at 3 and 12 months. A mixed-methods process evaluation will investigate competency, dose, fidelity, feasibility, and acce
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- 2024
69. Addressing the UHC Challenge Using the Disease Control Priorities 3 Approach: Lessons Learned and an Overview of the Pakistan Experience
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Alwan, Ala, Siddiqi, S, Safi, Malik, Zaidi, Raza, Khalid, M.A, Baltussen, R.M.P.M., Zulfiqar, Wahaj, Vassall, A., Alwan, Ala, Siddiqi, S, Safi, Malik, Zaidi, Raza, Khalid, M.A, Baltussen, R.M.P.M., Zulfiqar, Wahaj, and Vassall, A.
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Contains fulltext : 306966.pdf (Publisher’s version ) (Open Access)
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- 2024
70. Costing Interventions for Developing an Essential Package of Health Services: Application of a Rapid Method and Results From Pakistan
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Raza, Wajeeha, Zulfiqar, Wahaj, Shah, Mashal Murad, Huda, M., Akhtar, Syeda Shehirbano, Aqeel, Urooj, Bijlmakers, L.A., Vassall, A., Torres-Rueda, Sergio, Raza, Wajeeha, Zulfiqar, Wahaj, Shah, Mashal Murad, Huda, M., Akhtar, Syeda Shehirbano, Aqeel, Urooj, Bijlmakers, L.A., Vassall, A., and Torres-Rueda, Sergio
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Contains fulltext : 306968.pdf (Publisher’s version ) (Open Access)
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- 2024
71. Optimal health and economic impact of non-pharmaceutical intervention measures prior and post vaccination in England: a mathematical modelling study
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Michael J. Tildesley, Anna Vassall, Steven Riley, Mark Jit, Frank Sandmann, Edward M. Hill, Robin N. Thompson, Benjamin D. Atkins, John Edmunds, Louise Dyson, and Matt J. Keeling
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health ,economic ,policy ,disease control ,optimization ,Science - Abstract
Background. Even with good progress on vaccination, SARS-CoV-2 infections in the UK may continue to impose a high burden of disease and therefore pose substantial challenges for health policy decision makers. Stringent government-mandated physical distancing measures (lockdown) have been demonstrated to be epidemiologically effective, but can have both positive and negative economic consequences. The duration and frequency of any intervention policy could, in theory, be optimized to maximize economic benefits while achieving substantial reductions in disease. Methods. Here, we use a pre-existing SARS-CoV-2 transmission model to assess the health and economic implications of different strengths of control through time in order to identify optimal approaches to non-pharmaceutical intervention stringency in the UK, considering the role of vaccination in reducing the need for future physical distancing measures. The model is calibrated to the COVID-19 epidemic in England and we carry out retrospective analysis of the optimal timing of precautionary breaks in 2020 and the optimal relaxation policy from the January 2021 lockdown, considering the willingness to pay (WTP) for health improvement. Results. We find that the precise timing and intensity of interventions is highly dependent upon the objective of control. As intervention measures are relaxed, we predict a resurgence in cases, but the optimal intervention policy can be established dependent upon the WTP per quality adjusted life year loss avoided. Our results show that establishing an optimal level of control can result in a reduction in net monetary loss of billions of pounds, dependent upon the precise WTP value. Conclusion. It is vital, as the UK emerges from lockdown, but continues to face an on-going pandemic, to accurately establish the overall health and economic costs when making policy decisions. We demonstrate how some of these can be quantified, employing mechanistic infectious disease transmission models to establish optimal levels of control for the ongoing COVID-19 pandemic.
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- 2022
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72. Cultural and linguistic adaptation of the multi-dimensional OXCAP-MH for outcome measurement of mental health among people living with HIV/AIDS in Uganda: the Luganda version
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Kenneth R. Katumba, Yoko V. Laurence, Patrick Tenywa, Joshua Ssebunnya, Agata Laszewska, Judit Simon, Anna Vassall, Eugene Kinyanda, and Giulia Greco
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Capability approach ,Mental health ,Quality of life ,HIV/AIDS ,Uganda ,PROMs ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background It is rare to find HIV/AIDS care providers in sub-Saharan Africa routinely providing mental health services, yet 8–30% of the people living with HIV have depression. In an ongoing trial to assess integration of collaborative care of depression into routine HIV services in Uganda, we will assess quality of life using the standard EQ-5D-5L, and the capability-based OxCAP-MH which has never been adapted nor used in a low-income setting. We present the results of the translation and validation process for cultural and linguistic appropriateness of the OxCAP-MH tool for people living with HIV/AIDS and depression in Uganda. Methods The translation process used the Concept Elaboration document, the source English version of OxCAP-MH, and the Back-Translation Review template as provided during the user registration process of the OxCAP-MH, and adhered to the Translation and Linguistic Validation process of the OxCAP-MH, which was developed following the international principles of good practice for translation as per the International Society for Pharmacoeconomics and Outcomes Research’s standards. Results The final official Luganda version of the OxCAP-MH was obtained following a systematic iterative process, and is equivalent to the English version in content, but key concepts were translated to ensure cultural acceptability, feasibility and comprehension by Luganda-speaking people. Conclusion The newly developed Luganda version of the OxCAP-MH can be used both as an alternative or as an addition to health-related quality of life patient-reported outcome measures in research about people living with HIV with comorbid depression, as well as more broadly for mental health research.
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- 2021
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73. Political economy analysis of the performance‐based financing programme in Afghanistan
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Ahmad Shah Salehi, Karl Blanchet, Anna Vassall, and Josephine Borghi
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Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Performance-based financing (PBF) has attracted considerable attention in recent years in low and middle-income countries. Afghanistan’s Ministry of Public Health (MoPH) implemented a PBF programme between 2010 and 2015 to strengthen the utilisation of maternal and child health services in primary health facilities. This study aimed to examine the political economy factors influencing the adoption, design and implementation of the PBF programme in Afghanistan. Methods Retrospective qualitative research methods were employed using semi structured interviews as well as a desk review of programme and policy documents. Key informants were selected purposively from the national level (n = 9), from the province level (n = 6) and the facility level (n = 15). Data analysis was inductive as well as deductive and guided by a political economy analysis framework to explore the factors that influenced the adoption and design of the PBF programme. Thematic content analysis was used to analyse the data. Results The global policy context, and implementation experience in other LMIC, shaped PBF and its introduction in Afghanistan. The MoPH saw PBF as a promise of additional resources needed to rebuild the country’s health system after a period of conflict. The MoPH support for PBF was also linked to their past positive experience of performance-based contracting. Power dynamics and interactions between PBF programme actors also shaped the policy process. The PBF programme established a centralised management structure which strengthened MoPH and donor ability to manage the programme, but overlooked key stakeholders, such as provincial health offices and non-state providers. However, MoPH had limited input in policy design, resulting in a design which was not well tailored to the national setting. Conclusions This study shows that PBF programmes need to be designed and adapted according to the local context, involving all relevant actors in the policy cycle. Future studies should focus on conducting empirical research to not only understand the multiple effects of PBF programmes on the performance of health systems but also the main political economy dynamics that influence the PBF programmes in different stages of the policy process.
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- 2021
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74. Count the cost of disability caused by COVID-19
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Briggs, Andrew and Vassall, Anna
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Disability -- Economic aspects -- Causes of ,Medical care, Cost of -- Measurement ,Environmental issues ,Science and technology ,Zoology and wildlife conservation - Abstract
Focusing only on cases and deaths hides the pandemic's lasting health burden on people, societies and economies. Focusing only on cases and deaths hides the pandemic's lasting health burden on people, societies and economies., Author(s): Andrew Briggs, Anna Vassall Author Affiliations: Count the cost of disability caused by COVID-19 A person receiving dialysis. COVID-19 can leave people with lasting damage to their kidneys, among [...]
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- 2021
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75. Estimating Cost Functions for Resource Allocation Using Transmission Models: A Case Study of Tuberculosis Case Finding in South Africa
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Gomez, Gabriela B., Mudzengi, Don L., Bozzani, Fiammetta, Menzies, Nicholas A., and Vassall, Anna
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- 2020
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76. Correction: COVID-19 vaccination in Sindh Province, Pakistan: A modelling study of health impact and cost-effectiveness.
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Carl A B Pearson, Fiammetta Bozzani, Simon R Procter, Nicholas G Davies, Maryam Huda, Henning Tarp Jensen, Marcus Keogh-Brown, Muhammad Khalid, Sedona Sweeney, Sergio Torres-Rueda, CHiL COVID-19 Working Group, CMMID COVID-19 Working Group, Rosalind M Eggo, Anna Vassall, and Mark Jit
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Medicine - Abstract
[This corrects the article DOI: 10.1371/journal.pmed.1003815.].
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- 2022
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77. 180:oral Designing health benefit packages for universal health coverage – should countries follow a sectoral, incremental or hybrid approach?
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Kalipso Chalkidou, Rob Baltussen, Sameen Siddiqi, Gavin Surgey, Sitaporn Youngkong, Anna Vassall, Ole F Norheim, Leon Bijlmakers, Wija Oortwijn, Maarten Jansen, and Mojtiba Nouhi
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Published
- 2022
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78. 136:oral Optimising health benefit packages in the era of COVID-19: a case study from Pakistan
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Mark Jit, Matthew Quaife, Mashal Murad Shah, Anna Vassall, Sedona Sweeney, Nichola Kitson, Rosalind Eggo, Maryam Huda, Simon Procter, Sergio Torres-Rueda, Fiammetta Bozzani, Carl Pearson, Wajeeha Raza, and Nichola Naylor
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Published
- 2022
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79. Informing Balanced Investment in Services and Health Systems: A Case Study of Priority Setting for Tuberculosis Interventions in South Africa
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Bozzani, Fiammetta M., Sumner, Tom, Mudzengi, Don, Gomez, Gabriela B., White, Richard, and Vassall, Anna
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- 2020
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80. Algorithm-guided empirical tuberculosis treatment for people with advanced HIV (TB Fast Track): an open-label, cluster-randomised trial
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Grant, Alison D, Charalambous, Salome, Tlali, Mpho, Karat, Aaron S, Dorman, Susan E, Hoffmann, Christopher J, Johnson, Suzanne, Vassall, Anna, Churchyard, Gavin J, and Fielding, Katherine L
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- 2020
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81. Higher cost of implementing Xpert® MTB/RIF in Ugandan peripheral settings: implications for cost-effectiveness
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Hsiang, E, Little, KM, Haguma, P, Hanrahan, CF, Katamba, A, Cattamanchi, A, Davis, JL, Vassall, A, and Dowdy, D
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Biomedical and Clinical Sciences ,Cardiovascular Medicine and Haematology ,Clinical Sciences ,Cost Effectiveness Research ,HIV/AIDS ,Prevention ,Infectious Diseases ,Biodefense ,Rare Diseases ,Tuberculosis ,Comparative Effectiveness Research ,Health Services ,Emerging Infectious Diseases ,Clinical Research ,Vaccine Related ,Infection ,Good Health and Well Being ,Antitubercular Agents ,Cost-Benefit Analysis ,Diagnostic Tests ,Routine ,Drug Resistance ,Multiple ,Bacterial ,Empirical Research ,Humans ,Rifampin ,Sputum ,Tuberculosis ,Multidrug-Resistant ,Uganda ,Uncertainty ,tuberculosis ,diagnostic tests ,routine ,molecular diagnostic techniques ,cost-benefit analysis ,Cardiorespiratory Medicine and Haematology ,Microbiology ,Cardiovascular medicine and haematology ,Clinical sciences ,Epidemiology - Abstract
SettingInitial cost-effectiveness evaluations of Xpert(®) MTB/RIF for tuberculosis (TB) diagnosis have not fully accounted for the realities of implementation in peripheral settings.ObjectiveTo evaluate costs and diagnostic outcomes of Xpert testing implemented at various health care levels in Uganda.DesignWe collected empirical cost data from five health centers utilizing Xpert for TB diagnosis, using an ingredients approach. We reviewed laboratory and patient records to assess outcomes at these sites and10 sites without Xpert. We also estimated incremental cost-effectiveness of Xpert testing; our primary outcome was the incremental cost of Xpert testing per newly detected TB case.ResultsThe mean unit cost of an Xpert test was US$21 based on a mean monthly volume of 54 tests per site, although unit cost varied widely (US$16-58) and was primarily determined by testing volume. Total diagnostic costs were 2.4-fold higher in Xpert clinics than in non-Xpert clinics; however, Xpert only increased diagnoses by 12%. The diagnostic costs of Xpert averaged US$119 per newly detected TB case, but were as high as US$885 at the center with the lowest volume of tests.ConclusionXpert testing can detect TB cases at reasonable cost, but may double diagnostic budgets for relatively small gains, with cost-effectiveness deteriorating with lower testing volumes.
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- 2016
82. International Partnerships to Develop Evidence-informed Priority Setting Institutions: Ten Years of Experience from the International Decision Support Initiative (iDSI)
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Baker, Peter, primary, Barasa, Edwine, additional, Chalkidou, Kalipso, additional, Chola, Lumbwe, additional, Culyer, Anthony, additional, Dabak, Saudamini, additional, Fan, Victoria Y., additional, Frønsdal, Katrine, additional, Heupink, Lieke Fleur, additional, Isaranuwatchai, Wanrudee, additional, Mbau, Rahab, additional, Mehndiratta, Abha, additional, Nonvignon, Justice, additional, Ruiz, Francis, additional, Teerawattananon, Yot, additional, Vassall, Anna, additional, and Guzman, Javier, additional
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- 2023
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83. VIEWPOINT: The new EU Global Health Strategy and research: From policy to action.
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Plasència, A., Vassall, A., Agyepong, I., Assohou‐Luty, C., Goerlitz, L., Klipstein‐Grobusch, K., Rocamora, A., and Cobelens, F.
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CLIMATE change & health , *EMERGENCY management , *COVID-19 pandemic , *COMMUNICABLE diseases , *RUSSIAN invasion of Ukraine, 2022- - Published
- 2024
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84. A comprehensive framework for considering additional unintended consequences in economic evaluation
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Liv Nymark and Anna Vassall
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Cost-effectiveness analysis ,Indirect effects ,Consequences ,Externality ,Internality ,Guidelines ,Medicine (General) ,R5-920 - Abstract
Abstract Background In recent years there has been a growth in economic evaluations that consider indirect health benefits to populations due to advances in mathematical modeling. In addition, economic evaluations guidelines have suggested the inclusion of impact inventories to include non-health direct and indirect consequences. We aim to bring together this literature, together with the broader literature on internalities and externalities to propose a comprehensive approach for analysts to identify and characterize all unintended consequences in economic evaluations. Methods We present a framework to assist analysts identify and characterize additional costs and effects beyond that of direct health impact primarily intended to be influenced by the intervention/technology. We build on previous checklists to provide analysts with a comprehensive framework to justify the inclusion or exclusion of effects, supporting the use of current guidelines, to ensure any unintended effects are considered. We illustrate this framework with examples from immunization. These were identified from a previous systematic review, PhD thesis work, and general search scoping in PubMed databases. Results We present a comprehensive framework to consider additional consequences, exemplified by types and categories. We bring this and other guidance together to assist analysts identify possible unintended consequences whether taking a provider or societal perspective. Conclusions Although there are many challenges ahead to standardize the inclusion of additional consequences in economic evaluation, we hope by moving beyond generic statements to reporting against a comprehensive framework of additional effects we can support further consistency in this aspect of cost-effectiveness analysis going forward.
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- 2020
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85. Tuberculosis infection prevention and control: why we need a whole systems approach
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Karina Kielmann, Aaron S. Karat, Gimenne Zwama, Christopher Colvin, Alison Swartz, Anna S. Voce, Tom A. Yates, Hayley MacGregor, Nicky McCreesh, Idriss Kallon, Anna Vassall, Indira Govender, Janet Seeley, and Alison D. Grant
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Drug-resistant tuberculosis ,Infection prevention and control ,Health system ,South Africa ,Infectious and parasitic diseases ,RC109-216 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Infection prevention and control (IPC) measures to reduce transmission of drug-resistant and drug-sensitive tuberculosis (TB) in health facilities are well described but poorly implemented. The implementation of TB IPC has been assessed primarily through quantitative and structured approaches that treat administrative, environmental, and personal protective measures as discrete entities. We present an on-going project entitled Umoya omuhle (“good air”), conducted in two provinces of South Africa, that adopts an interdisciplinary, ‘whole systems’ approach to problem analysis and intervention development for reducing nosocomial transmission of Mycobacterium tuberculosis (Mtb) through improved IPC. We suggest that TB IPC represents a complex intervention that is delivered within a dynamic context shaped by policy guidelines, health facility space, infrastructure, organisation of care, and management culture. Methods drawn from epidemiology, anthropology, and health policy and systems research enable rich contextual analysis of how nosocomial Mtb transmission occurs, as well as opportunities to address the problem holistically. A ‘whole systems’ approach can identify leverage points within the health facility infrastructure and organisation of care that can inform the design of interventions to reduce the risk of nosocomial Mtb transmission.
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- 2020
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86. The utility of repeat Xpert MTB/RIF testing to diagnose tuberculosis in HIV-positive adults with initial negative result [version 2; peer review: 2 approved, 1 approved with reservations]
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Yasmeen Hanifa, Violet N. Chihota, Katherine L. Fielding, Salome Charalambous, Lungiswa Adonis, Alan Karstaedt, Nicola Foster, Mark P. Nicol, Kerrigan McCarthy, Edina Sinanovic, Nontobeko T. Ndlovu, Wendy Stevens, Faieza Sahid, Alison D. Grant, Gavin J. Churchyard, and Anna Vassall
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Tuberculosis ,Diagnostic Test ,HIV infection ,South Africa ,eng ,Medicine - Abstract
Background: Amongst HIV-positive adults in South Africa with initial negative Xpert results, we compared the yield from repeating Xpert MTB/RIF (“Xpert”) on sputum to guideline-recommended investigation for tuberculosis (TB). Methods: A systematic sample of adults attending for HIV care were enrolled in a cohort exploring TB investigation pathways. This substudy was restricted to those at highest risk of TB (CD4
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- 2022
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87. Cost-effectiveness of short, oral treatment regimens for rifampicin resistant tuberculosis.
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Sedona Sweeney, Catherine Berry, Emil Kazounis, Ilaria Motta, Anna Vassall, Matthew Dodd, Katherine Fielding, and Bern-Thomas Nyang'wa
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Public aspects of medicine ,RA1-1270 - Abstract
Current options for treating tuberculosis (TB) that is resistant to rifampicin (RR-TB) are few, and regimens are often long and poorly tolerated. Following recent evidence from the TB-PRACTECAL trial countries are considering programmatic uptake of 6-month, all-oral treatment regimens. We used a Markov model to estimate the incremental cost-effectiveness of three regimens containing bedaquiline, pretomanid and linezolid (BPaL) with and without moxifloxacin (BPaLM) or clofazimine (BPaLC) compared with the current mix of long and short standard of care (SOC) regimens to treat RR-TB from the provider perspective in India, Georgia, Philippines, and South Africa. We estimated total costs (2019 USD) and disability-adjusted life years (DALYs) over a 20-year time horizon. Costs and DALYs were discounted at 3% in the base case. Parameter uncertainty was tested with univariate and probabilistic sensitivity analysis. We found that all three regimens would improve health outcomes and reduce costs compared with the current programmatic mix of long and short SOC regimens in all four countries. BPaL was the most cost-saving regimen in all countries, saving $112-$1,173 per person. BPaLM was the preferred regimen at a willingness to pay per DALY of 0.5 GDP per capita in all settings. Our findings indicate BPaL-based regimens are likely to be cost-saving and more effective than the current standard of care in a range of settings. Countries should consider programmatic uptake of BPaL-based regimens.
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- 2022
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88. Estimating waiting times, patient flow, and waiting room occupancy density as part of tuberculosis infection prevention and control research in South African primary health care clinics.
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Aaron S Karat, Nicky McCreesh, Kathy Baisley, Indira Govender, Idriss I Kallon, Karina Kielmann, Hayley MacGregor, Anna Vassall, Tom A Yates, and Alison D Grant
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Public aspects of medicine ,RA1-1270 - Abstract
Transmission of respiratory pathogens, such as Mycobacterium tuberculosis and severe acute respiratory syndrome coronavirus 2, is more likely during close, prolonged contact and when sharing a poorly ventilated space. Reducing overcrowding of health facilities is a recognised infection prevention and control (IPC) strategy; reliable estimates of waiting times and 'patient flow' would help guide implementation. As part of the Umoya omuhle study, we aimed to estimate clinic visit duration, time spent indoors versus outdoors, and occupancy density of waiting rooms in clinics in KwaZulu-Natal (KZN) and Western Cape (WC), South Africa. We used unique barcodes to track attendees' movements in 11 clinics, multiple imputation to estimate missing arrival and departure times, and mixed-effects linear regression to examine associations with visit duration. 2,903 attendees were included. Median visit duration was 2 hours 36 minutes (interquartile range [IQR] 01:36-3:43). Longer mean visit times were associated with being female (13.5 minutes longer than males; p
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- 2022
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89. Models of COVID-19 vaccine prioritisation: a systematic literature search and narrative review
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Saadi, Nuru, Chi, Y-Ling, Ghosh, Srobana, Eggo, Rosalind M., McCarthy, Ciara V., Quaife, Matthew, Dawa, Jeanette, Jit, Mark, and Vassall, Anna
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- 2021
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90. Cultural and linguistic adaptation of the multi-dimensional OXCAP-MH for outcome measurement of mental health among people living with HIV/AIDS in Uganda: the Luganda version
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Katumba, Kenneth R., Laurence, Yoko V., Tenywa, Patrick, Ssebunnya, Joshua, Laszewska, Agata, Simon, Judit, Vassall, Anna, Kinyanda, Eugene, and Greco, Giulia
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- 2021
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91. Political economy analysis of the performance‐based financing programme in Afghanistan
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Salehi, Ahmad Shah, Blanchet, Karl, Vassall, Anna, and Borghi, Josephine
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- 2021
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92. Financing intersectoral action for health: a systematic review of co-financing models
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Finn McGuire, Lavanya Vijayasingham, Anna Vassall, Roy Small, Douglas Webb, Teresa Guthrie, and Michelle Remme
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Health financing ,Intersectoral ,Co-financing ,Pooled budgets ,Social determinants of health ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Addressing the social and other non-biological determinants of health largely depends on policies and programmes implemented outside the health sector. While there is growing evidence on the effectiveness of interventions that tackle these upstream determinants, the health sector does not typically prioritise them. From a health perspective, they may not be cost-effective because their non-health outcomes tend to be ignored. Non-health sectors may, in turn, undervalue interventions with important co-benefits for population health, given their focus on their own sectoral objectives. The societal value of win-win interventions with impacts on multiple development goals may, therefore, be under-valued and under-resourced, as a result of siloed resource allocation mechanisms. Pooling budgets across sectors could ensure the total multi-sectoral value of these interventions is captured, and sectors’ shared goals are achieved more efficiently. Under such a co-financing approach, the cost of interventions with multi-sectoral outcomes would be shared by benefiting sectors, stimulating mutually beneficial cross-sectoral investments. Leveraging funding in other sectors could off-set flat-lining global development assistance for health and optimise public spending. Although there have been experiments with such cross-sectoral co-financing in several settings, there has been limited analysis to examine these models, their performance and their institutional feasibility. Aim This study aimed to identify and characterise cross-sectoral co-financing models, their operational modalities, effectiveness, and institutional enablers and barriers. Methods We conducted a systematic review of peer-reviewed and grey literature, following PRISMA guidelines. Studies were included if data was provided on interventions funded across two or more sectors, or multiple budgets. Extracted data were categorised and qualitatively coded. Results Of 2751 publications screened, 81 cases of co-financing were identified. Most were from high-income countries (93%), but six innovative models were found in Uganda, Brazil, El Salvador, Mozambique, Zambia, and Kenya that also included non-public and international payers. The highest number of cases involved the health (93%), social care (64%) and education (22%) sectors. Co-financing models were most often implemented with the intention of integrating services across sectors for defined target populations, although models were also found aimed at health promotion activities outside the health sector and cross-sectoral financial rewards. Interventions were either implemented and governed by a single sector or delivered in an integrated manner with cross-sectoral accountability. Resource constraints and political relevance emerged as key enablers of co-financing, while lack of clarity around the roles of different sectoral players and the objectives of the pooling were found to be barriers to success. Although rigorous impact or economic evaluations were scarce, positive process measures were frequently reported with some evidence suggesting co-financing contributed to improved outcomes. Conclusion Co-financing remains in an exploratory phase, with diverse models having been implemented across sectors and settings. By incentivising intersectoral action on structural inequities and barriers to health interventions, such a novel financing mechanism could contribute to more effective engagement of non-health sectors; to efficiency gains in the financing of universal health coverage; and to simultaneously achieving health and other well-being related sustainable development goals.
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- 2019
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93. Stark choices: exploring health sector costs of policy responses to COVID-19 in low-income and middle-income countries
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Edwine Barasa, Mark Jit, Mishal Khan, Nicholas Davies, Matthew Quaife, Anna Vassall, Sedona Sweeney, Nichola Kitson, Tim Baker, Angela Kairu, Rosalind Eggo, Maryam Huda, Nichola R Naylor, Sergio Torres-Rueda, Fiammetta Bozzani, Nuru Saadi, Carl Pearson, Simon R Procter, Marcus R Keogh-Brown, Henning Tarp Jensen, and Raza Zaidi
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Objectives COVID-19 has altered health sector capacity in low-income and middle-income countries (LMICs). Cost data to inform evidence-based priority setting are urgently needed. Consequently, in this paper, we calculate the full economic health sector costs of COVID-19 clinical management in 79 LMICs under different epidemiological scenarios.Methods We used country-specific epidemiological projections from a dynamic transmission model to determine number of cases, hospitalisations and deaths over 1 year under four mitigation scenarios. We defined the health sector response for three base LMICs through guidelines and expert opinion. We calculated costs through local resource use and price data and extrapolated costs across 79 LMICs. Lastly, we compared cost estimates against gross domestic product (GDP) and total annual health expenditure in 76 LMICs.Results COVID-19 clinical management costs vary greatly by country, ranging between
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- 2021
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94. Cost-effectiveness of bedaquiline, pretomanid and linezolid for treatment of extensively drug-resistant tuberculosis in South Africa, Georgia and the Philippines
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Francesca Conradie, Anna Vassall, Norbert Ndjeka, Gabriela Beatriz Gomez, Mariana Siapka, Anna Marie Celina Garfin, Nino Lomtadze, Zaza Avaliani, Nana Kiria, Shelly Malhotra, Sarah Cook-Scalise, Sandeep Juneja, Daniel Everitt, and Melvin Spigelman
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Medicine - Published
- 2021
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95. Keep Your Own Secret
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Calderon de la Barca, Pedro and Holland, Henry Richard Vassall
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Keep Your Own Secret (Calderon de la Barca, Pedro) (Play) ,Literature/writing - Abstract
LibriVox recording of Keep Your Own Secret by Pedro Calderón de la Barca. (Translated by Henry Richard Vassall Holland.) Read in English by Alan Mapstone; Greg Giordano; Larry Wilson; Adrian [...]
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- 2022
96. A Systematic Review of Methodological Variation in Healthcare Provider Perspective Tuberculosis Costing Papers Conducted in Low- and Middle-Income Settings, Using An Intervention-Standardised Unit Cost Typology
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Cunnama, Lucy, Gomez, Gabriela B., Siapka, Mariana, Herzel, Ben, Hill, Jeremy, Kairu, Angela, Levin, Carol, Okello, Dickson, DeCormier Plosky, Willyanne, Garcia Baena, Inés, Sweeney, Sedona, Vassall, Anna, and Sinanovic, Edina
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- 2020
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97. Examining Approaches to Estimate the Prevalence of Catastrophic Costs Due to Tuberculosis from Small-Scale Studies in South Africa
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Sweeney, Sedona, Vassall, Anna, Guinness, Lorna, Siapka, Mariana, Chimbindi, Natsayi, Mudzengi, Don, and Gomez, Gabriela B.
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- 2020
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98. COVID-19 vaccination in Sindh Province, Pakistan: A modelling study of health impact and cost-effectiveness.
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Carl A B Pearson, Fiammetta Bozzani, Simon R Procter, Nicholas G Davies, Maryam Huda, Henning Tarp Jensen, Marcus Keogh-Brown, Muhammad Khalid, Sedona Sweeney, Sergio Torres-Rueda, CHiL COVID-19 Working Group, CMMID COVID-19 Working Group, Rosalind M Eggo, Anna Vassall, and Mark Jit
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Medicine - Abstract
BackgroundMultiple Coronavirus Disease 2019 (COVID-19) vaccines appear to be safe and efficacious, but only high-income countries have the resources to procure sufficient vaccine doses for most of their eligible populations. The World Health Organization has published guidelines for vaccine prioritisation, but most vaccine impact projections have focused on high-income countries, and few incorporate economic considerations. To address this evidence gap, we projected the health and economic impact of different vaccination scenarios in Sindh Province, Pakistan (population: 48 million).Methods and findingsWe fitted a compartmental transmission model to COVID-19 cases and deaths in Sindh from 30 April to 15 September 2020. We then projected cases, deaths, and hospitalisation outcomes over 10 years under different vaccine scenarios. Finally, we combined these projections with a detailed economic model to estimate incremental costs (from healthcare and partial societal perspectives), disability-adjusted life years (DALYs), and incremental cost-effectiveness ratio (ICER) for each scenario. We project that 1 year of vaccine distribution, at delivery rates consistent with COVAX projections, using an infection-blocking vaccine at $3/dose with 70% efficacy and 2.5-year duration of protection is likely to avert around 0.9 (95% credible interval (CrI): 0.9, 1.0) million cases, 10.1 (95% CrI: 10.1, 10.3) thousand deaths, and 70.1 (95% CrI: 69.9, 70.6) thousand DALYs, with an ICER of $27.9 per DALY averted from the health system perspective. Under a broad range of alternative scenarios, we find that initially prioritising the older (65+) population generally prevents more deaths. However, unprioritised distribution has almost the same cost-effectiveness when considering all outcomes, and both prioritised and unprioritised programmes can be cost-effective for low per-dose costs. High vaccine prices ($10/dose), however, may not be cost-effective, depending on the specifics of vaccine performance, distribution programme, and future pandemic trends. The principal drivers of the health outcomes are the fitted values for the overall transmission scaling parameter and disease natural history parameters from other studies, particularly age-specific probabilities of infection and symptomatic disease, as well as social contact rates. Other parameters are investigated in sensitivity analyses. This study is limited by model approximations, available data, and future uncertainty. Because the model is a single-population compartmental model, detailed impacts of nonpharmaceutical interventions (NPIs) such as household isolation cannot be practically represented or evaluated in combination with vaccine programmes. Similarly, the model cannot consider prioritising groups like healthcare or other essential workers. The model is only fitted to the reported case and death data, which are incomplete and not disaggregated by, e.g., age. Finally, because the future impact and implementation cost of NPIs are uncertain, how these would interact with vaccination remains an open question.ConclusionsCOVID-19 vaccination can have a considerable health impact and is likely to be cost-effective if more optimistic vaccine scenarios apply. Preventing severe disease is an important contributor to this impact. However, the advantage of prioritising older, high-risk populations is smaller in generally younger populations. This reduction is especially true in populations with more past transmission, and if the vaccine is likely to further impede transmission rather than just disease. Those conditions are typical of many low- and middle-income countries.
- Published
- 2021
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99. Cost-effectiveness of a Community-based Hypertension Improvement Project (ComHIP) in Ghana: results from a modelling study
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Alma J Adler, Amos Laar, Peter Lamptey, Anna Vassall, Ulla K Griffiths, Francisco Pozo-Martin, James Akazili, and Reina Der
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Medicine - Abstract
Objective To undertake a cost-effectiveness analysis of a Community-based Hypertension Improvement Project (ComHIP) compared with standard hypertension care in Ghana.Design Cost-effectiveness analysis using a Markov model.Setting Lower Manya Krobo, Eastern Region, Ghana.Intervention We evaluated ComHIP, an intervention with multiple components, including: community-based education on cardiovascular disease (CVD) risk factors and healthy lifestyles; community-based screening and monitoring of blood pressure by licensed chemical sellers and CVD nurses; community-based diagnosis, treatment, counselling, follow-up and referral of hypertension patients by CVD nurses; telemedicine consultation by CVD nurses and referral of patients with severe hypertension and/or organ damage to a physician; information and communication technologies messages for healthy lifestyles, treatment adherence support and treatment refill reminders for hypertension patients; Commcare, a cloud-based health records system linked to short-message service (SMS)/voice messaging for treatment adherence, reminders and health messaging. ComHIP was evaluated under two scale-up scenarios: (1) ComHIP as currently implemented with support from international partners and (2) ComHIP under full local implementation.Main outcome measures Incremental cost per disability-adjusted life-year (DALY) averted from a societal perspective over a time horizon of 10 years.Results ComHIP is unlikely to be a cost-effective intervention, with current ComHIP implementation and ComHIP under full local implementation costing on average US$12 189 and US$6530 per DALY averted, respectively. Results were robust to uncertainty analyses around model parameters.Conclusions High overhead costs and high patient costs in ComHIP suggest that the societal costs of ensuring appropriate hypertension care are high and may not produce sufficient impact to achieve cost-effective implementation. However, these results are limited by the evidence quality of the effectiveness estimates, which comes from observational data rather than from randomised controlled study design.
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- 2021
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100. Improving the contribution of mathematical modelling evidence to guidelines and policy: Experiences from tuberculosis
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McQuaid, C. Finn, Menzies, Nicolas A., Houben, Rein M.G.J., Gomez, Gabriella B., Vassall, Anna, Arinaminpathy, Nimalan, Dodd, Peter J., and White, Richard G.
- Published
- 2024
- Full Text
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