Table 4.
Multivariable individual and partnership-level correlates of non-concordant unprotected anal intercourse among MSM reporting anal sex partnerships in the prior 12 months, Seattle, Washington, 2003–2006
| % Of partnerships without non-concordant UAI | % Of partnerships with non-concordant UAI | Multivariable OR (95% CI)a | |
|---|---|---|---|
| HIV-negative men (n = 630 anal sex partnerships of 361 men) b | |||
| Age | |||
| 19–29 | 115/120 (95.8) | 5/120 (4.2) | REF |
| 30–39 | 216/238 (90.3) | 22/238 (9.2) | 4.6 (1.2, 17.5) |
| 40–49 | 163/176 (92.6) | 13/176 (7.4) | 5.2 (1.2, 21.4) |
| ≥50 | 81/94 (86) | 13/94 (14) | 8.6 (1.6, 46.2) |
| Annual income | |||
| <$30,000 | 124/150 (82.7) | 26/150 (17.3) | REF |
| ≥$30,000 | 434/461 (94.1) | 27/461 (5.9) | 0.3 (0.1, 0.6) |
| Methamphetamine use, prior 6 months | |||
| No | 558/605 (92.2) | 47/605 (7.8) | REF |
| Yes | 19/25 (76) | 6/25 (24) | 5.0 (1.4, 17.7) |
| Participant’s disclosure of HIV status | |||
| Disclosed as HIV-negative | 477/497 (96.0) | 20/497 (4.0) | REF |
| Disclosed as HIV-positive or unknown | 5/7 (71) | 2/7 (29) | 7.1 (1.3, 37.5) |
| Did not disclose | 95/126 (75.4) | 31/126 (24.6) | 6.5 (3.1, 13.6) |
| Meeting placec | |||
| Online | 127/135 (94) | 8/135 (6) | REF |
| Bar/dance club | 144/161 (89) | 17/162 (11) | 2.3 (1.1, 5.0) |
| Through a friend | 76/83 (92) | 7/83 (8) | 3.2 (0.9, 10.6) |
| Bathhouse/sex club | 23/30 (77) | 7/30 (23) | 2.3 (0.9, 6.4) |
| Social public setting | 81/85 (95) | 4/85 (5) | 1.7 (0.5, 5.6) |
| Park/beach/street | 34/39 (87) | 5/39 (13) | 1.9 (0.4, 8.1) |
| Other/unknown | 92/97 (95) | 5/97 (5) | 0.9 (0.3, 3.0) |
| HIV-positive men (n = 151 anal sex partnerships of 69 men) d | |||
| Participant’s disclosure of HIV status | |||
| Disclosed as HIV-positive | 101/113 (89) | 12/113 (11) | REF |
| Disclosed as HIV-negative or unknown | 3/4 (75) | 1/4 (25) | REF |
| Did not disclose | 17/34 (50) | 17/34 (50) | 6.8 (1.6, 28.6) |
CI confidence interval, OR odds ratio, RDD random digit dial, REF reference group, UAI unprotected anal intercourse
Adjusted for RDD year. Only significant associations (P < 0.05) are shown in the table
For HIV-negative men, model also includes individual-level binary variables indicating non-white race/ethnicity (OR = 0.4; 95% CI: 0.1, 1.4) and Viagra use in the prior 6 months (OR = 2.1; 95% CI: 0.7, 5.9). Model χ2(14) = 45.94; P < 0.001
Social public settings include work, community activities, hobbies, sports, gym, and parties at friends’ houses. Other includes telephone sex lines, dating/personal ads, adult video or bookstores, and other unspecified venues
For HIV-positive men, model also includes individual-level binary variables indicating annual income C$30,000 (OR = 4.3; 95% CI: 0.8,23.3); not being a lifelong Seattle resident (OR = 1.2; 95% CI: 0.1, 13.6); ≥6 male sex partners (OR = 0.3; 95% CI: 0.1, 2.2); ≥3 male anal sex partners (OR = 6.1; 95% CI: 0.6, 61.4); and, a partnership-level variable indicating a one-time partnership (OR = 1.1; 95% CI: 0.4, 3.1). Model F(7, 69) = 1.66; P = 0.13. Note that we present the F-statistic because this model used jackknife standard error estimation for small sample sizes as reported in the “Methods” section