Nonmonosexual Partnerships: Information, Motivation and Self-Efficacy Among Methamphetamine-Using Men Who Have Sex with Men Who Also Have Sex with Women or Transgender Persons

ABSTRACT

Sex with more than one gender is associated with higher substance use and sexual HIV risk. The authors examined knowledge, motivation, and self-efficacy to engage in safer substance use and sexual behavior among methamphetamine-using U.S. men who have sex with more than one gender (N = 343). Almost half (46.2%) of the men reported having sex with a man (MSM) and a woman or transgender partner in the last 30 days. Compared to monosexual MSM, nonmonosexual MSM reported greater condom use self-efficacy however, they reported more sexual partners who inject drugs. The authors observed distinct differences between men who do or do not have sex with more than one gender.

KEYWORDS:

• HIV prevention
• MSM. bisexual. sexual behavior. drug use
• methamphetamine
• harm reduction
• mono-sexual

Acknowledgements

We thank all the parTy participants. We would also like to acknowledge Jared Shenk and B. R. Simon Rosser for their continuing support.

Funding

The study “Internet-Based HIV Prevention for Methamphetamine-Using MSM: Formative Research (parTy)” was funded by the National Institute of Mental Health, funding number 1R21MH095430.

Notes

¹ EFA, one factor seven item: root mean square error of approximation (RMSEA) (90% CI: 0.16 (0.10–0.22); comparative fit index (CFI): 0.51; Tucker-Lewis index (TLI): 0.26. EFA, one factor four item: RMSEA (90% CI): 0.09 (0.00–0.27); CFI: 0.96; TLI: 0.88. CFA, one factor four item: RMSEA (90% CI): 0.11 (0.05–0.19); CFI: 0.96; TLI: 0.88.

² EFA, one factor 13 item: RMSEA (90% CI): 0.13 (0.10–0.16]; CFI:0.89; TLI:0.87. EFA, one factor five item: RMSEA (90% CI): 0.06 (0.00–0.19]; CFI:0.99;TLI:0.99. CFA, one factor five item: RMSEA (90% CI): 0.06 (0.00–0.11]; CFI:0.99;TLI:0.99.

³ EFA, one factor 11 item: RMSEA (90% CI): 0.20 (0.16–0.28); CFI: 0.45; TLI: 0.32. EFA- one factor six item: RMSEA (90% CI): 0.28 (0.22–0.35); CFI: 0.61; TLI: 0.34. EFA- two factor six item: RMSEA (90% CI): 0.09 (0.00–0.22); CFI: 0.98; TLI: 0.92. CFA- two factor six item: RMSEA (90% CI): 0.08 (0.04–0.11); CFI: 0.98; TLI: 0.96. CFA- two factor six item with cross loading: RMSEA (90% CI): 0.06 (0.00–0.10]; CFI: 0.99; TLI: 0.98.