Table III.
Partner characteristics associated with concurrency among sexual partners reported by MSM with recent (acute or early) HIV infection enrolled in the San Diego Primary Infection Resource Consortium (2002-2015).
| Partner Characteristics | OR (95% CI) | Adjusteda OR (95% CI) |
|---|---|---|
| Partnership duration (in months) | 1.02 (1.01, 1.03) | 1.02 (1.01, 1.03) |
| Main partner | 1.13 (0.71, 1.81) | 0.86 (0.47, 1.54) |
| HIV-negative partner | 1.42 (0.99, 2.05) | 1.27 (0.81, 1.99) |
| Age mixing | ||
| >10 years younger than participant | 1.47 (0.91, 2.38) | 2.22 (1.09, 4.52) |
| Within 10 years of the participant’s age | Ref | Ref |
| >10 years older than participant | 0.66 (0.40, 1.07) | 0.60 (0.32, 1.12) |
| Race/ethnicity mixing | ||
| Different race/ethnicity than the participant | Ref | Ref |
| Same race/ethnicity as the participant | 0.86 (0.59, 1.25) | 0.84 (0.52, 1.35) |
| Met partner via the Internet | 1.33 (0.92, 1.94) | 1.56 (0.98, 2.48) |
| Any CAI with partner | 1.09 (0.76, 1.55) | 0.82 (0.52, 1.30) |
| Illicit drug use during sex with partnerb | 0.96 (0.63, 1.46) | 1.03 (0.61, 1.74) |
Abbreviations: MSM=men who have sex with men; OR=odds ratio; CI=confidence interval; CAI=condomless anal intercourse.
a
N=498; In addition to the partner characteristics listed, the final model was adjusted for the participant’s age, race/ethnicity, number of male sexual partners (past 3 months), and enrollment year, as well as the timing of the participant’s HIV diagnosis relative to the formation of the sexual partnership (i.e., before vs. after).
b
Excluding marijuana.