Network Modeling of PrEP Uptake on Referral Networks and Health Venue Utilization Among Young Men Who Have Sex with Men

Kayo Fujimoto*, Peng Wang, Charlene A. Flash, Lisa M. Kuhns, Yucheng Zhao, Muhammad Amith, John A. Schneider

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The objective of this study is to identify individual-level factors and health venue utilization patterns associated with uptake of pre-exposure prophylaxis (PrEP) and to evaluate whether PrEP uptake behavior is further diffused among young men who have sex with men (YMSM) through health venue referral networks. A sample of 543 HIV-seronegative YMSM aged 16–29 were recruited in 2014–2016 in Chicago, IL, and Houston, TX. Stochastic social network models were estimated to model PrEP uptake. PrEP uptake was associated with more utilization of health venues in Houston and higher levels of sexual risk behavior in Chicago. In Houston, both Hispanic and Black YMSM compared to White YMSM were less likely to take PrEP. No evidence was found to support the spread of PrEP uptake via referral networks, which highlights the need for more effective PrEP referral network systems to scale up PrEP implementation among at-risk YMSM.

Original languageEnglish (US)
Pages (from-to)1698-1707
Number of pages10
JournalAIDS and behavior
Volume23
Issue number7
DOIs
StatePublished - Jul 15 2019

Keywords

  • Auto-logistic actor attribute models
  • Exponential random graph models
  • Health care delivery system
  • PrEP
  • Social network analysis
  • Systems science methodology
  • Young men who have sex with men

ASJC Scopus subject areas

  • Social Psychology
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

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