THE REPUBLIC OF BOTSWANA | MINISTRY OF HEALTH | DEPARTMENT OF PUBLIC HEALTH | NATIONAL MALARIA CONTROL PROGRAMME
Republic of Armenia
Reporting period: January-December 2015
Accessed: 29.09.2019
This report investigates the impact of potential misclassification of samples on HIV prevalence estimates for 23 surveys conducted from 2010-2014. In addition to visual inspection of laboratory results, we examined how accounting for potential misclassification of HIV status through Bayesian latent ...class models affected the prevalence estimates. Two types of Bayesian models were specified: a model that only uses the individual dichotomous test results and a continuous model that uses the quantitative information of the EIA (i.e., the signal-to-cutoff values). Overall, we found that adjusted prevalence estimates matched the surveys’ original results, with overlapping uncertainty intervals. This suggested that misclassification of HIV status should not affect the prevalence estimates in most surveys. However, our analyses suggested that two surveys may be problematic. The prevalence could have been overestimated in the Uganda AIDS Indicator Survey 2011 and the Zambia Demographic and Health Survey 2013-14, although the magnitude of overestimation remains difficult to ascertain. Interpreting results from the Uganda survey is difficult because of the lack of internal quality control and potential violation of the multivariate normality assumption of the continuous Bayesian latent class model. In conclusion, despite the limitations of our latent class models, our analyses suggest that prevalence estimates from most of the surveys reviewed are not affected by sample misclassification.
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Amphetamine-type stimulants, new psychoactive substances
-4-
World Drug Report 2017
Accessed: 14.03.2019
Single TB and HIV Concept Note Albania 2016-2018 27 April 2015
A Handbook for country programmes
Collection of country-level good practices
Available in English, French, Portuguese and Arabic
Successful immunization of a critical mass of the African population with one or several safe and efficacious COVID-19 vaccines.Key objectives1. Accelerate African involvement in the clinical development of a vaccine. 2. Ensur...e African countries can access a sufficient share of the global vaccine supply.3. Remove barriers to widespread delivery and uptake of effective vaccines across Africa.
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