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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Over the period 2015 to 2019, scaling up a package of selected nutrition-specific and nutrition sensitive interventions to cover 90 per cent of Sudan would:
- Reduce the under-five mortality rate to 49/1,000 live births
- Reduce the prevalence of stunting to 25 per cent
- Reduce the ...prevalence of wasting (global acute malnutrition – GAM) to 6 per cent
- Increase exclusive breastfeeding to 63 per cent
- Reduce iron deficiency anaemia among pregnant women to 26 per cent.
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For this report, the Task Force commissioned
additional background papers on health taxes to
update the evidence, assess short-term revenue
potential, and understand the role of health taxes
in the current era of multiple crises. We find that
health taxes continue to be underutilized despite th...e
powerful impact they have in reducing preventable
death and disease — a particularly glaring act of
neglect in a world that has experienced a massive
pandemic.
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