TABLE 2.
Triad-level concurrency and concurrent UAI in the previous 6 mo among 12,812 partner triads, involving 2,114 MSM participants with multiple partners in the previous 6 mo, by participant race/ethnicity#
| White, non-Hispanic (n = 7,907) | Black, non-Hispanic (n = 2,728) | Hispanic (n = 2,177) | Unadj. P | Adj. P1 | |
|---|---|---|---|---|---|
| n (%) | n (%) | n (%) | |||
| Concurrent triad | 3,064 (38.8) | 960 (35.2) | 805 (37.0) | 0.0032 | 0.21 |
| Duration of concurrent overlap (months) | 0.02 | -- | |||
| ≤1 | 1,557 (50.8) | 458 (47.7) | 398 (49.4) | ||
| 2 | 424 (13.8) | 149 (15.5) | 145 (18.0) | ||
| 3 | 376 (12.3) | 108 (11.3) | 85 (10.6) | ||
| 4 | 207 (6.8) | 77 (8.0) | 45 (5.6) | ||
| 5 | 195 (6.4) | 54 (5.6) | 40 (5.0) | ||
| ≥6 | 305 (10.0) | 114 (11.9) | 92 (11.4) | ||
| UAI in previous 6 mo, overall | P interaction | ||||
| Among concurrent triads | 667/2039 (32.7) | 174/563 (30.9) | 110/486 (22.6) | Unadj. | Adj. 1 |
| Among non-concurrent triads | 739/3,719 (19.9) | 200/1,095 (18.3) | 161/1,062 (15.2) | ||
| Prevalence OR (95% CI): | 1.96 (1.73, 2.22) | 2.00 (1.58, 2.53) | 1.64 (1.25, 2.15) | 0.46 | 0.95 |
| UAI in previous 6 mo, among AI triads | |||||
| Among concurrent triads | 667/1,290 (51.7) | 174/398 (43.7) | 110/319 (34.5) | ||
| Among non-concurrent triads | 739/1,856 (39.8) | 200/652 (30.7) | 161/553 (29.1) | ||
| Prevalence OR (95% CI): | 1.62 (1.40, 1.87) | 1.76 (1.36, 2.27) | 1.28 (0.95, 1.72) | 0.26 | 0.57 |
#
Triads (partnership pairs) are comprised of a participant and two sex partners, and are the fundamental unit of concurrency
1
Adjusted for repeated measures on respondents