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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Handbook of COVID-19 Prevention and Treatment, expecting to share their invaluable practical advice and references with medical staff around the world. This handbook compared and analyzed the experience of other experts in China, and provides good reference to key departments such as hospital infect...ion management, nursing, and outpatient clinics. This handbook provides comprehensive guidelines and best practices by China's top experts for coping with COVID-19.
This handbook, provided by the First Affiliated Hospital of Zhejiang University, describes how organizations can minimize the cost while maximizing the effect of measures to manage and control the coronavirus outbreak. The handbook also discusses why hospitals and other healthcare institutions should have command centers when encountering a large-scale emergency in the context of COVID-19. This handbook also includes the following:
- Technical strategies for addressing issues during emergencies.
- Treatment methods to treat the critically ill.
- Efficient clinical decision-making support.
- Best practices for key departments like inflection management and outpatient clinics.
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PSYCHOLOGICAL HELP FOR ADULTS IN COMMUNITIES EXPOSED TO ADVERSITY
Nested case-control study of health workers exposed to confirmed COVID-19 patients.
Similar objectives to the cohort study but case-control studies may be cheaper and provide robust evidence to characterize and assess the risk factors for SARS-CoV-2 infection in health workers exposed to COVID-19 p...atients.
Health workers with confirmed COVID-19 will be recruited as cases and other health workers in the same health care setting without infection will be recruited as controls (incidence density sampling).
Secondary objectives are similar to the cohort study.
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DHS Working Papers No. 86