Skip to Main content Skip to Navigation
Journal articles

Model-based Respondent-driven sampling analysis for HIV prevalence in brazilian MSM

Abstract : Respondent Driven Sampling study (RDS) is a population sampling method developed to study hard-to-reach populations. A sample is obtained by chain-referral recruitment in a network of contacts within the population of interest. Such self-selected samples are not representative of the target population and require weighing observations to reduce estimation bias. Recently, the Network Model-Assisted (NMA) method was described to compute the required weights. The NMA method relies on modeling the underlying contact network in the population where the RDS was conducted, in agreement with directly observable characteristics of the sample such as the number of contacts, but also with more difficult-to-measure characteristics such as homophily or differential characteristics according to the response variable. Here we investigated the use of the NMA method to estimate HIV prevalence from RDS data when information on homophily is limited. We show that an iterative procedure based on the NMA approach allows unbiased estimations even in the case of strong population homophily and differential activity and limits bias in case of preferential recruitment. We applied the methods to determine HIV prevalence in men having sex with men in Brazilian cities and confirmed a high prevalence of HIV in these populations from 3.8% to 22.1%.
Complete list of metadatas

Cited literature [33 references]  Display  Hide  Download

https://www.hal.inserm.fr/inserm-02502357
Contributor : Myriam Bodescot <>
Submitted on : Monday, March 9, 2020 - 11:06:47 AM
Last modification on : Wednesday, June 24, 2020 - 10:48:04 AM

File

s41598-020-59567-2.pdf
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Olivier Robineau, Marcelo Gomes, Carl Kendall, Ligia Kerr, André Périssé, et al.. Model-based Respondent-driven sampling analysis for HIV prevalence in brazilian MSM. Scientific Reports, Nature Publishing Group, 2020, 10 (1), pp.2646. ⟨10.1038/s41598-020-59567-2⟩. ⟨inserm-02502357⟩

Share

Metrics

Record views

202

Files downloads

443