Key Populations

Planning a Multiplier Method Population Size Estimation Study with RDS: a tool for sample size calculation
This tool developed by Elizabeth Fearon allows the user to calculate the confidence intervals of a population size estimate and to see how these vary for different respondent driven sampling (RDS) survey sample sizes and inputs. For further information please see this paper.Link to Tool
Sample Size Calculations for Population Size Estimation StudiesUsing Multiplier Methods With Respondent-Driven Sampling Surveys
While guidance exists for obtaining population size
estimates using multiplier methods with respondent-driven sampling
surveys, we lack specific guidance for making sample size decisions.
The objective of this paper is to guide the design of multiplier method population size estimation studies using respondent-driven sampling surveys to reduce the random error around the estimate obtained.
Link to Journal Site
Sampling Key Populations for HIV Surveillance: Results From Eight Cross-Sectional Studies Using Respondent-Driven Sampling and Venue-Based Snowball Sampling
In using regularly collected or existing surveillance data to characterize engagement in HIV services among marginalized populations, differences in sampling methods may produce different pictures of the target population thereby suggesting different priorities for response.
The objective in this paper was to use existing data to evaluate the sample distribution of eight studies of female sex workers and men who have sex with men who were recruited using different sampling approaches in Manzini, Swaziland and Yaoundé, Cameroon.
Link to Journal Site
Video presentation on the HIV Prevention Cascade by Professor James Hargreaves
James Hargreaves - Director of the MeSH Consortium gave a presentation on the HIV Prevention Cascade at LSHTM in September 2016 . This talk was linked to the Special edition of the Lancet HIV on the HIV prevention cascade in which he wrote one paper developing a theoretical framework for the prevention cascade and contribute to two others. To see the slides separately from the video presentation, please find them here.LSHTM Logo Black
Measuring Sexual Behavior Stigma to Inform Effective HIV Prevention and Treatment Programs for Key Populations
This paper concludes moving forward necessitates the integration of validated stigma scales in routine HIV surveillance efforts, as well as HIV epidemiologic and intervention studies focused on key populations, as a means of tracking progress toward a more efficient and impactful HIV response.Link to Journal Site
The HIV Care Cascade Among Female Sex Workers in Zimbabwe: Results of a Population-Based Survey From the Sisters Antiretroviral Therapy Programme for Prevention of HIV, an Integrated Response (SAPPH-IRe) Trial
This paper presents results from the baseline of the SAPPH-IRe trial. This explored the HIV care cascade amongst female sex workers in Zimbabwe. The study found that 36% of HIV positive women were unaware of their status and 29% had unsuppressed viral load. This represent a high level of risk for onward transmission of infection
Link to Journal Site
Overlapping HIV and sex-work stigma among female sex workers recruited to 14 respondent-driven sampling surveys across Zimbabwe, 2013
This paper on which Professor James Hargreaves - Director of the MeSH Consortium - is lead author uses data from the SAPPH-IRe baseline survey to assess the overlapping stigma due to HIV and due to the nature of their work experienced by female sex workers in Zimbabwe.
Link to Journal Article

A method to estimate the national prevalence of HIV-infection among females sex workers in Zimbabwe
In this presentation, Dr Liz Fearon a MeSH Consortium member based at LSHTM, presents work on the use of Respondent Driven Sampling, a chain referral sampling method, to estimate the prevalence of HIV among female sex workers in Zimbabwe. This work was presented at the International Society for Sexually Transmitted Disease Research meeting in Brisbane Australia in September 2015World STI HIV
HIV and sex-work related stigma and discrimination: women's experiences from 14 sites across Zimbabwe
This presentation by Professor James Hargreaves , Director of the MeSH consortium explores the high levels of stigma both "internalised" and "experienced" that female sex workers in Zimbabwe are exposed to.
Professor James Hargreaves et al ISSTDR 2015 Brisbane Australia (conference presentation)
The HIV prevention cascade: integrating theories of epidemiological, behavioural, and social science into programme design and monitoring
This paper on which Professor James Hargreaves - Director of the MeSH Consortium - is lead author presents a theoretical framework to understand the HIV prevention cascade. It was developed as part of the Lancet HIV special edition on the HIV prevention cascade .
Link to Journal Site

Lancet HIV