9 results on '"Hansen, Kristian"'
Search Results
2. Cost-effectiveness analysis of malaria rapid diagnostic tests for appropriate treatment of malaria at the community level in Uganda.
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Hansen, Kristian S., Ndyomugyenyi, Richard, Magnussen, Pascal, Lal, Sham, and Clarke, Siân E.
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MALARIA diagnosis ,MEDICAL personnel ,INFECTIOUS disease transmission ,FEVER in children ,DIAGNOSIS of fever ,DRUG therapy for malaria ,MALARIA ,ROUTINE diagnostic tests ,ANTIMALARIALS ,COMMUNITY health workers ,COST effectiveness ,RESEARCH funding ,ECONOMICS ,THERAPEUTICS - Abstract
In Sub-Saharan Africa, malaria remains a major cause of morbidity and mortality among children under 5, due to lack of access to prompt and appropriate diagnosis and treatment. Many countries have scaled-up community health workers (CHWs) as a strategy towards improving access. The present study was a cost-effectiveness analysis of the introduction of malaria rapid diagnostic tests (mRDTs) performed by CHWs in two areas of moderate-to-high and low malaria transmission in rural Uganda. CHWs were trained to perform mRDTs and treat children with artemisinin-based combination therapy (ACT) in the intervention arm while CHWs offered treatment based on presumptive diagnosis in the control arm. Data on the proportion of children with fever 'appropriately treated for malaria with ACT' were captured from a randomised trial. Health sector costs included: training of CHWs, community sensitisation, supervision, allowances for CHWs and provision of mRDTs and ACTs. The opportunity costs of time utilised by CHWs were estimated based on self-reporting. Household costs of subsequent treatment-seeking at public health centres and private health providers were captured in a sample of households. mRDTs performed by CHWs was associated with large improvements in appropriate treatment of malaria in both transmission settings. This resulted in low incremental costs for the health sector at US$3.0 per appropriately treated child in the moderate-to-high transmission area. Higher incremental costs at US$13.3 were found in the low transmission area due to lower utilisation of CHW services and higher programme costs. Incremental costs from a societal perspective were marginally higher. The use of mRDTs by CHWs improved the targeting of ACTs to children with malaria and was likely to be considered a cost-effective intervention compared to a presumptive diagnosis in the moderate-to-high transmission area. In contrast to this, in the low transmission area with low attendance, RDT use by CHWs was not a low cost intervention. [ABSTRACT FROM AUTHOR]
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- 2017
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3. Comparison of the capacity between public and private health facilities to manage under-five children with febrile illnesses in Uganda.
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Buregyeya, Esther, Rutebemberwa, Elizeus, LaRussa, Phillip, Lal, Sham, Clarke, Sîan E., Hansen, Kristian S., Magnussen, Pascal, and Mbonye, Anthony K.
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VACCINES ,PUBLIC health ,JUVENILE diseases ,MALARIA prevention ,DISEASE management - Abstract
Background: Public health facilities are usually the first to receive interventions compared to private facilities, yet majority of health seeking care is first done with the latter. This study compared the capacity to manage acute febrile illnesses in children below 5 years in private vs public health facilities in order to design interventions to improve quality of care. Methods: A survey was conducted within 57 geographical areas (parishes), from August to October 2014 in Mukono district, central Uganda. The survey comprised both facility and health worker assessment. Data were collected on drug stocks, availability of treatment guidelines, diagnostic equipment, and knowledge in management of malaria, pneumonia and diarrhoea, using a structured questionnaire. Results: A total of 53 public and 241 private health facilities participated in the study. While similar proportions of private and public health facilities stocked Coartem, the first-line anti-malarial drug, (98 vs 95%, p = 0.22), significantly more private than public health facilities stocked quinine (85 vs 53%, p < 0.01). Stocks of obsolete anti-malarial drugs, such as chloroquine, were reported in few public and private facilities (3.7 vs 12.5%, p = 0.06). Stocks of antibiotics-amoxycillin and gentamycin were similar in both sectors (≥90% for amoxicillin; ≥50 for gentamycin). Training in malaria was reported by 65% of public health facilities vs 56% in the private sector, p = 0.25), while, only 21% in the public facility and 12% in the private facilities, p = 0.11, reported receiving training in pneumonia. Only 55% of public facilities had microscopes. Malaria treatment guidelines were significantly lacking in the private sector, p = 0.01. Knowledge about first-line management of uncomplicated malaria, pneumonia and diarrhoea was significantly better in the public facilities compared to the private ones, though still sub-optimal. Conclusion: Deficiencies of equipment, supplies and training exist even in public health facilities. In order to significantly improve the capacity to handle acute febrile illness among children under five, training in proper case management, availability of supplies and diagnostics need to be addressed in both sectors. [ABSTRACT FROM AUTHOR]
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- 2017
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4. Appropriate targeting of artemisinin-based combination therapy by community health workers using malaria rapid diagnostic tests: findings from randomized trials in two contrasting areas of high and low malaria transmission in south-western Uganda.
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Ndyomugyenyi, Richard, Magnussen, Pascal, Lal, Sham, Hansen, Kristian, Clarke, Siân E., and Clarke, Siân E
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MALARIA treatment ,MALARIA diagnosis ,ARTEMISININ ,TARGETED drug delivery ,COMBINATION drug therapy ,RANDOMIZED controlled trials ,MALARIA transmission ,UGANDANS ,DISEASES ,THERAPEUTICS ,DIAGNOSIS of fever ,DRUG therapy for malaria ,ANTIMALARIALS ,COMMUNITY health workers ,COMPARATIVE studies ,MALARIA ,RESEARCH methodology ,MEDICAL cooperation ,MEDICAL protocols ,RESEARCH ,RESEARCH funding ,EVALUATION research ,PARASITEMIA ,DIAGNOSIS - Abstract
Copyright of Tropical Medicine & International Health is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2016
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5. Introducing rapid diagnostic tests for malaria into registered drug shops in Uganda: lessons learned and policy implications.
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Mbonye, Anthony K., Clarke, Sîan E., Lal, Sham, Chandler, Clare I., Hutchinson, Eleanor, Hansen, Kristian S., and Magnussen, Pascal
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MALARIA diagnosis ,DIAGNOSTIC reagents & test kits ,DIAGNOSIS ,DRUGSTORES ,PUBLIC health - Abstract
Background: Malaria is a major public health problem in Uganda and the current policy recommends introduction of rapid diagnostic tests for malaria (RDTs) to facilitate effective case management. However, provision of RDTs in drug shops potentially raises a new set of issues, such as adherence to RDTs results, management of severe illnesses, referral of patients, and relationship with caretakers. The main objective of the study was to examine the impact of introducing RDTs in registered drug shops in Uganda and document lessons and policy implications for future scale-up of malaria control in the private health sector. Methods: A cluster-randomized trial introducing RDTs into registered drug shops was implemented in central Uganda from October 2010 to July 2012. An evaluation was undertaken to assess the impact and the processes involved with the introduction of RDTs into drug shops, the lessons learned and policy implications. Results: Introducing RDTs into drug shops was feasible. To scale-up this intervention however, drug shop practices need to be regulated since the registration process was not clear, supervision was inadequate and record keeping was poor. Although initially it was anticipated that introducing a new practice of record keeping would be cumbersome, but at evaluation this was not found to be a constraint. This presents an important lesson for introducing health management information system into drug shops. Involving stakeholders, especially the district health team, in the design was important for ownership and sustainability. The involvement of village health teams in community sensi-tization to the new malaria treatment and diagnosis policy was a success and this strategy is recommended for future interventions. Conclusion: Introducing RDTs into drug shops was feasible and it increased appropriate treatment of malaria with artemisinin-based combination therapy. It is anticipated that the lessons presented will help better implementation of similar interventions in the private sector. [ABSTRACT FROM AUTHOR]
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- 2015
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6. Introducing rapid diagnostic tests for malaria into drug shops in Uganda: design and implementation of a cluster randomized trial.
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Mbonye, Anthony K., Magnussen, Pascal, Chandler, Clare I. R., Hansen, Kristian S., Lal, Sham, Cundill, Bonnie, Lynch, Caroline A., and Clarke, Siân E.
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Background: An intervention was designed to introduce rapid diagnostics tests for malaria (mRDTs) into registered drug shops in Uganda to encourage rational and appropriate treatment of malaria with artemisinin-based combination therapy (ACT). We conducted participatory training of drug shop vendors and implemented supporting interventions to orientate local communities (patients) and the public sector (health facility staff and district officials) to the behavioral changes in diagnosis, treatment and referral being introduced in drug shops. The intervention was designed to be evaluated through a cluster randomized trial. In this paper, we present detailed design, implementation and evaluation experiences in order to help inform future studies of a complex nature. Methods: Three preparatory studies (formative, baseline and willingness-to-pay) were conducted to explore perceptions on diagnosis and treatment of malaria at drug shops, and affordable prices for mRDTs and ACTs in order to inform the design of the intervention and implementation modalities. The intervention required careful design with the intention to be acceptable, sustainable and effective. Critical components of intervention were: community sensitization and creating awareness, training of drug shop vendors to diagnose malaria with mRDTs, treat and refer customers to formal health facilities, giving pre-referral rectal artesunate and improved record-keeping. The primary outcome was the proportion of patients receiving appropriately-targeted treatment with ACT, evaluated against microscopy on a research blood slide. Results: Introducing mRDTs in drug shops may seem simple, but our experience of intervention design, conduct and evaluation showed this to be a complex process requiring multiple interventions and evaluation components drawing from a combination of epidemiological, social science and health economics methodologies. The trial was conducted in phases sequenced such that each benefited from the other. Conclusions: The main challenges in designing this trial were maintaining a balance between a robust intervention to support effective behaviour change and introducing practices that would be sustainable in a real-life situation in tropical Africa; as well as achieving a detailed evaluation without inadvertently influencing prescribing behaviour. [ABSTRACT FROM AUTHOR]
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- 2014
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7. Willingness-to-pay for a rapid malaria diagnostic test and artemisinin-based combination therapy from private drug shops in Mukono district, Uganda.
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Hansen, Kristian Schultz, Pedrazzoli, Debora, Mbonye, Anthony, Clarke, Sian, Cundill, Bonnie, Magnussen, Pascal, and Yeung, Shunmay
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WILLINGNESS to pay ,MALARIA diagnosis ,ARTEMISININ ,PARASITOLOGY ,CONTINGENT valuation ,COMMERCIAL products ,SOCIAL status - Abstract
In Uganda, as in many parts of Africa, the majority of the population seek treatment for malaria in drug shops as their first point of care; however, parasitological diagnosis is not usually offered in these outlets. Rapid diagnostic tests (RDTs) for malaria have attracted interest in recent years as a tool to improve malaria diagnosis, since they have proved accurate and easy to perform with minimal training. Although RDTs could feasibly be performed by drug shop vendors, it is not known how much customers would be willing to pay for an RDT if offered in these settings. We conducted a contingent valuation survey among drug shop customers in Mukono District, Uganda. Exit interviews were undertaken with customers aged 15 years and above after leaving a drug shop having purchased an antimalarial and/or paracetamol. The bidding game technique was used to elicit the willingness-to-pay (WTP) for an RDT and a course of artemisinin-based combination therapy (ACT) with and without RDT confirmation. Factors associated with WTP were investigated using linear regression. The geometric mean WTP for an RDT was US$0.53, US$1.82 for a course of ACT and US$2.05 for a course of ACT after a positive RDT. Factors strongly associated with a higher WTP for these commodities included having a higher socio-economic status, no fever/malaria in the household in the past 2 weeks and if a malaria diagnosis had been obtained from a qualified health worker prior to visiting the drug shop. The findings further suggest that the WTP for an RDT and a course of ACT among drug shop customers is considerably lower than prevailing and estimated end-user prices for these commodities. Increasing the uptake of ACTs in drug shops and restricting the sale of ACTs to parasitologically confirmed malaria will therefore require additional measures. [ABSTRACT FROM PUBLISHER]
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- 2013
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8. Cost-effectiveness analysis of three health interventions to prevent malaria in pregnancy in an area of low transmission in Uganda
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Hansen, Kristian Schultz, Ndyomugyenyi, Richard, Magnussen, Pascal, and Clarke, Siân E.
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MALARIA in pregnancy , *MALARIA prevention , *COST effectiveness , *PREGNANT women , *FETUS , *ANEMIA in pregnancy , *MOSQUITO nets - Abstract
Abstract: Pregnant women and their unborn children are vulnerable to malaria, increasing the risk of maternal anaemia, low birthweight (LBW) and intrauterine growth retardation. There is little evidence on the cost-effectiveness of intermittent preventive treatment in pregnancy (IPTp) and insecticide-treated bednets (ITN) in areas of low transmission. A randomised controlled trial with three arms was conducted in antenatal clinics in Kabale District (Uganda), an epidemic-prone highland area of low malaria transmission. The interventions were: (i) IPTp with sulfadoxine/pyrimethamine (SP) given twice during pregnancy (IPTp-SP); (ii) ITNs alone; and (iii) a combined intervention with both ITNs and IPTp-SP. Primary health outcomes were LBW and maternal anaemia. The costs of providing IPTp-SP and ITNs as well as treatment of malaria episodes were captured from all health centres in the study area. There were no significant differences in health outcomes among the three interventions. The cost-effectiveness analysis and sensitivity analyses performed did not provide convincing support for replacing IPTp-SP (current policy) by ITNs alone or by a combined intervention in this low-transmission setting on economic grounds. The cost per pregnant woman of providing the services was lowest for the IPTp-SP intervention (US$0.79 per woman) followed by ITNs (US$1.71) and the combined intervention of IPTp-SP+ITNs (US$2.48). The relative cost-effectiveness of antenatal distribution of ITNs might improve if the cost savings accruing from continued use of a long-lasting insecticidal net after pregnancy as well as positive externalities were also taken into account, and this warrants further study. [ClinicalTrials.gov identifier: NCT00142207] [Copyright &y& Elsevier]
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- 2012
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9. Efficacy of malaria prevention during pregnancy in an area of low and unstable transmission: an individually-randomised placebo-controlled trial using intermittent preventive treatment and insecticide-treated nets in the Kabale Highlands, southwestern Uganda
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Ndyomugyenyi, Richard, Clarke, Siân E., Hutchison, Coll L., Hansen, Kristian Schultz, and Magnussen, Pascal
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MALARIA prevention ,MALARIA in pregnancy ,INFECTIOUS disease transmission ,RANDOMIZED controlled trials ,PLACEBOS ,INSECTICIDES ,PREVENTIVE medicine - Abstract
Abstract: Intermittent preventive treatment of malaria during pregnancy (IPTp) and insecticide-treated nets (ITN) are recommended malaria interventions during pregnancy; however, there is limited information on their efficacy in areas of low malaria transmission in sub-Saharan Africa. An individually-randomised placebo-controlled trial involving 5775 women of all parities examined the effect of IPTp, ITNs alone, or ITNs used in combination with IPTp on maternal anaemia and low birth weight (LBW) in a highland area of southwestern Uganda. The overall prevalence of malaria infection, maternal anaemia and LBW was 15.0%, 14.7% and 6.5%, respectively. Maternal and fetal outcomes were generally remarkably similar across all intervention groups (P >0.05 for all outcomes examined). A marginal difference in maternal haemoglobin was observed in the dual intervention group (12.57g/dl) compared with the IPTp and ITN alone groups (12.40g/dl and 12.44g/dl, respectively; P =0.04), but this was too slight to be of clinical importance. In conclusion, none of the preventive strategies was found to be superior to the others, and no substantial additional benefit to providing both IPTp and ITNs during routine antenatal services was observed. With ITNs offering a number of advantages over IPTp, yet showing comparable efficacy, we discuss why ITNs could be an appropriate preventive strategy for malaria control during pregnancy in areas of low and unstable transmission. [ClinicalTrials.gov identifier: NCT00142207] [Copyright &y& Elsevier]
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- 2011
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