Applying the Information–Motivation–Behavioral Skills Model to Understand PrEP Intentions and Use Among Men Who Have Sex with Men
Research is needed to determine targets for interventions to increase pre-exposure prophylaxis (PrEP) uptake. The Information–Motivation–Behavioral Skills (IMB) model has not been tested for PrEP use among men who have sex with men (MSM). Men and transgender women and men were surveyed at a community event in the Midwest in 2016 (N = 476, 60% White, Mage = 35). New measures assessed PrEP knowledge, attitudes, stigma, descriptive and subjective norms, and intentions, and participants reported on PrEP use. We tested the IMB model for a subsample of HIV-negative MSM and transgender individuals (N = 357) using structural equation modeling. Only 12% of participants used PrEP. New measures performed well and were reliable (αs = 0.83–0.94). Structural models generally supported the IMB model: knowledge, stigma, and self-efficacy were directly associated with use, and attitudes, stigma, and descriptive norms had indirect effects on use via self-efficacy. The IMB model may be useful when developing PrEP interventions for MSM.
KeywordsPre-exposure prophylaxis Information–motivation–behavioral skills model Men who have sex with men HIV prevention
The author thanks Michelle Broaddus, Andrew Petroll, and Katherine Quinn for their contributions to measure development.
This study was funded by National Institutes of Health Grants 5P30-MH052776 and K01-MH099956.
Compliance with Ethical Standards
Conflict of interest
Jennifer L. Walsh declares that she has no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
The data collected in this study were fully anonymous. Due to the low-risk nature of the study, participants received an informational letter describing the study, and completion of the survey constituted consent.
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