UAI practices | HIV-negative men (n=14 785, 90.3%) | HIV-positive men with an undetectable viral load (n=1109, 6.8%) | HIV-positive men with a detectable viral load (n=481, 2.9%) | ||||||
n | % | 95% CI | n | % | 95% CI | n | % | 95% CI | |
UAI with consistent seropositioning† | |||||||||
UAIR and no UAIC | |||||||||
Seroconcordant UAIR | 495 | 3.4 | 3.1 to 3.6 | 15 | 1.4 | 0.7 to 2.0 | 2 | 0.4 | ‡ |
Serononconcordant UAIR | 300 | 2.0 | 1.8 to 2.3 | 7 | 0.6 | 0.2 to 1.1 | 2 | 0.4 | ‡ |
Serodiscordant UAIR | 36 | 0.2 | 0.2 to 0.3 | 20 | 1.8 | 1.0 to 2.6 | 9 | 1.9 | 0.7 to 3.1 |
Subtotal | 831 | 5.6 | 5.2 to 6.0 | 42 | 3.8 | 2.6 to 4.9 | 13 | 2.7 | 1.2 to 4.2 |
UAIC, with or without UAIR | |||||||||
UAIC with consistent HIV status disclosure | 186 | 1.3 | 1.1 to 1.4 | 19 | 1.7 | 0.9 to 2.5 | 12 | 2.5 | 1.1 to 3.9 |
UAIC with some HIV status disclosure | 272 | 1.8 | 1.6 to 2.1 | 28 | 2.5 | 1.6 to 3.4 | 14 | 2.9 | 1.4 to 4.4 |
UAIC without HIV status disclosure | 346 | 2.3 | 2.1 to 2.6 | 18 | 1.7 | 0.9 to 2.4 | 7 | 1.5 | 0.4 to 2.5 |
Subtotal | 804 | 5.4 | 5.1 to 5.8 | 65 | 5.9 | 4.5 to 7.2 | 33 | 6.9 | 4.6 to 9.1 |
Total (of each group) | 1635 | 11.0 | 10.6 to 11.6 | 107 | 9.7 | 7.9 to 11.4 | 46 | 9.6 | 6.9 to 12.2 |
UAI with consistent withdrawal and no ejaculation inside | |||||||||
UAIR and no UAIC | |||||||||
Seroconcordant UAIR | 442 | 3.0 | 2.7 to 3.3 | 15 | 1.3 | 0.7 to 2.0 | 3 | 0.6 | ‡ |
Serononconcordant UAIR | 307 | 2.1 | 1.8 to 2.3 | 12 | 1.1 | 0.5 to 1.7 | 2 | 0.4 | ‡ |
Serodiscordant UAIR | 22 | 0.1 | 0.1 to 0.2 | 14 | 1.3 | 0.6 to 1.9 | 5 | 1.1 | 0.1 to 1.9 |
Subtotal | 771 | 5.2 | 4.8 to 5.6 | 41 | 3.7 | 2.6 to 4.8 | 10 | 2.1 | 0.8 to 3.4 |
UAIC, with or without UAIR | |||||||||
UAIC with consistent HIV status disclosure | 202 | 1.4 | 1.2 to 1.6 | 23 | 2.0 | 1.2 to 2.9 | 7 | 1.5 | 0.4 to 2.5 |
UAIC with some HIV status disclosure | 339 | 2.3 | 2.1 to 2.5 | 41 | 3.7 | 2.6 to 4.8 | 27 | 5.6 | 3.5 to 7.7 |
UAIC without HIV disclosure | 395 | 2.7 | 2.4 to 2.9 | 23 | 2.1 | 1.3 to 2.9 | 11 | 2.3 | 0.9 to 3.6 |
Subtotal | 936 | 6.3 | 5.9 to 6.7 | 87 | 7.8 | 6.3 to 9.4 | 45 | 9.4 | 6.7 to 12.0 |
Total (of each group) | 1707 | 11.5 | 11.0 to 12.1 | 128 | 11.5 | 9.7 to 13.4 | 46 | 11.5 | 8.6 to 14.3 |
* The six UAI practices are mutually exclusive but consistent seropositioning and consistent withdrawal are not mutually exclusive.
† For HIV-negative men, this means insertive-only UAI and for HIV-positive men, this means receptive-only UAI.
‡ n<5 and it is too small to estimate 95% CI.
CI, with a binomial distribution; UAI, unprotected anal intercourse; UAIC, unprotected anal intercourse with any casual partners; UAIR, unprotected anal intercourse with one's regular partner.