Statistical adjustment of network degree in respondent-driven sampling estimators: Venue attendance as a proxy for network size among young MSM |
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| Affiliation: | 1. Center for Health Promotion and Prevention Research, Department of Health Promotion & Behavioral Sciences, Department of Biostatistics and Data Science, School of Public Health, The University of Texas Health Science Center at Houston, 7000 Fannin Street, UCT 2514, Houston, TX 77030-5401, United States;2. Division of Adolescent Medicine, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL, United States;3. Northwestern University, Feinberg School of Medicine, Department of Pediatrics, 225 E. Chicago Avenue, #161, Chicago, IL 60611, United States;4. Department of Medicine and Public Health Sciences and the Chicago Center for HIV Elimination, University of Chicago, 5837 South Maryland Avenue MC 5065, Chicago, IL 60637, United States |
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| Abstract: | We introduce a new venue-informed network degree measure, which we applied to respondent-driven sampling (RDS) estimators. Using data collected from 746 young MSM in 2014–2016 in Chicago, IL, and Houston, TX, we estimated the population seroprevalence of HIV and syphilis and risk/protective behaviors, using RDS estimates with self-reported network size as a standard degree measure as well as our proposed venue-informed degree measure. The results indicate that the venue-informed degree measure tended to be more efficient (smaller variance) and less biased than the other measure in both cities sampled. Venue attendance-adjusted network size may provide a more reliable and accurate degree measure for RDS estimates of the outcomes of interest. |
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| Keywords: | Respondent-driven sampling method (RDS) HIV/STI Two-mode affiliation networks Young men who have sex with men (MSM) sexual and drug use behavior Sexually transmitted infections Pre-exposure prophylaxis (PrEP) Venue affiliation |
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