Table 3.
Association sexual risk factors, any anal HPV infection, and anal HPV 16 infection.
| Overall | No HPV Infection | Any HPV Infection | RR (95% CI) | HPV 16 Infection | RR (95% CI)a | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Characteristic | N | (%) | N | (%) | N | (%) | N | (%) | ||
| Sex with Female Partners | ||||||||||
| Lifetime vaginal sex partners | ||||||||||
| 0 | 102 | (38) | 0 | (0) | 102 | (100) | 1.0b | 13 | (13) | 1.0b |
| 1-4 | 87 | (33) | 4 | (5) | 83 | (95) | 1.0b | 10 | (11) | 1.0b |
| 5-39 | 37 | (14) | 5 | (14) | 32 | (86) | 0.88 (0.8-0.97) | 5 | (14) | 0.6 (0.3-0.97) |
| ≥40 | 39 | (15) | 5 | (13) | 34 | (87) | 0.89 (0.8-0.98) | 3 | (8) | 0.4 (0.1-0.9) |
| Vaginal sex partners, past 30 days | ||||||||||
| 0 | 188 | (71) | 6 | (3) | 182 | (97) | 10 | 21 | (11) | 1.0 |
| 1 | 42 | (16) | 2 | (5) | 40 | (95) | 1.0 (0.9 – 1.1) | 6 | (14) | 1.0 (0.5 – 1.4) |
| ≥2 | 36 | (14) | 6 | (17) | 30 | (83) | 0.9 (0.7 – 0.97) | 4 | (11) | 0.5 (0.2 – 1.0) |
| Sex with Male Partners | ||||||||||
| Lifetime male partners | ||||||||||
| 1-100 | 67 | (25) | 7 | (10) | 60 | (90) | 1.0 | 4 | (6) | 1.0 |
| 101-1000 | 102 | (38) | 3 | (3) | 99 | (97) | 1.1 (1.0 – 1.2) | 16 | (16) | 2.3 (1.2 – 6.6) |
| >1000 | 96 | (36) | 4 | (4) | 92 | (96) | 1.1 (1.0 – 1.2) | 11 | (11) | 2.0 (1.0 – 5.8) |
| Ever receptive sex | ||||||||||
| Yes | 231 | (87) | 7 | (3) | 224 | (97) | 1.2 (1.1 – 1.5) | 30 | (13) | 6.5 (1.8 - 107) |
| No | 35 | (13) | 7 | (20) | 28 | 1.0 | 1 | (3) | 1.0 | |
| Lifetime partners with whom participant is the receptive partner | ||||||||||
| 0-10 | 55 | (21) | 7 | (13) | 48 | (87) | 1.0 | 2 | (4) | 1.0 |
| 11-100 | 37 | (14) | 2 | (5) | 35 | (95) | 1.1 (1.0 - 1.2) | 4 | (11) | 3.0 (0.8 - 17) |
| 101-1000 | 94 | (63) | 2 | (2) | 92 | (96) | 1.1 (1.0 – 1.3) | 7 | (13) | 3.9 (1.5 - 22) |
| >1000 | 79 | (30) | 3 | (4) | 76 | (96) | 1.1 (1.0 – 1.2) | 18 | (15) | 3.5 (1.3 - 20) |
| Partner uses condom during receptive anal sexc | ||||||||||
| Not always use condoms | 183 | (79) | 5 | (3) | 178 | (97) | 1.0 | 26 | (84) | 1.0 |
| Almost always/Always used condoms | 48 | (21) | 2 | (4) | 46 | (96) | 1.0 (0.9 – 1.0) | 4 | (67) | 1.3 (0.8 -3.0) |
| Receptive sex partners, past 30 days | ||||||||||
| No | 71 | (27) | 8 | (11) | 63 | (89) | 1.0 | 5 | (7) | 1.0 |
| Yes | 195 | (73) | 6 | (3) | 189 | (97) | 1.1 (1.0 – 1.2) | 26 | (13) | 2.1 (1.2 – 5.1) |
a
p-value, RR (95% CI) for comparison between having anal HPV 16 (N=31) infection and having no anal HPV infection (N=14); p-value for categorical variable from Fisher's Exact Test, and from ANOVA or ranked ANOVA for continuous variables; significance of relative risks determined from general linear model from likelihood ratio test.
b
groups for “0 partners” and “1-4 partners” combined as reference group.
c
among those who report ever having receptive anal sex
Bold text =p-value <0.05.