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P573 Geographic effects of incarceration on multiple partnerships and STI among black men who have sex with men
  1. Maria Khan1,
  2. Typhanye Dyer2,
  3. Joy Scheidell1,
  4. Russell Brewer3,
  5. Christopher Hucks-Ortiz4,
  6. Willem Van Der Mei1,
  7. Macregga Severe1,
  8. Kailyn Young1,
  9. Andrea Troxel1,
  10. Jay Kaufman5
  1. 1New York University School of Medicine, Population Health, New York, USA
  2. 2University of Maryland, Epidemiology and Biostatistics, College Park, USA
  3. 3University of Chicago, Chicago, USA
  4. 4The HIV Prevention Trials Network, Los Angeles, USA
  5. 5McGill University, Epidemiology, Biostatistics and Occupational Health, Montreal, Canada

Abstract

Background Racial/ethnic and sexual minorities face elevated risk of policing and detainment. Dual minority status is linked to disproportionate incarceration; among black men who have sex with men (BMSM) in the HIV Prevention Trials Network (HPTN) study, 60% had been incarcerated. Incarceration disrupts networks and increases partnership exchange and STI. We lack understanding of the impact of incarceration on STI risk among BMSM.

Methods We used data from HPTN 061 (N=1553) conducted in Atlanta, Boston, New York, Los Angeles, San Francisco, and Washington DC to measure longitudinal associations between incarceration within six months and twelve-month risk of multiple partnerships and biologically-confirmed STI (gonorrhea, chlamydia, syphilis). Using inverse probability of treatment weighted (IPTW) regression to account for pre-incarceration poverty, psychopathology, drug use, and STI risk, we estimated risk ratios (RRs) and 95% confidence intervals (CIs) for associations between incarceration and outcomes and assessed differences by city.

Results Approximately 14% had been incarcerated in the past six months. Controlling for site, incarceration predicted multiple partnerships (RR: 1.20, 95% CI: 1.06–1.36) and incident STI (RR: 1.08, 95% CI: 1.00–1.16). Associations with multiple partnerships and STI differed by city (joint test of interaction, p value <0.05). Incarceration was most strongly associated with multiple partnerships (RR: 1.69, 95% CI: 1.38–2.04) and STI (RR: 1.31, 95% CI: 1.04–1.64) in Washington DC. In other cities, STI RRs ranged from 0.95 to 1.08 and were not significant at the 0.05 level. Incarceration was associated with multiple partnerships in New York (RR: 1.25, 95% CI: 1.01–1.55) and Boston (RR: 1.31, 95% CI: 1.08–1.58), while RRs ranged from 0.87 to 1.08 and were not significant in other cities.

Conclusion Recent incarceration impacts STI risk among BMSM in Washington DC and the northeastern United States.

Disclosure No significant relationships.

  • risk factors
  • gay bisexual and other men who have sex with men
  • vulnerable populations

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