| | Control visits | Case visits | Bivariable model | Multivariable model† | | No. | No. | OR | (95% CI) | aOR | (95% CI) |
| Time-independent factors | | | Study site | | | Site 1 | 749 | 138 |
Referent |
Referent | Site 2 | 502 | 170 | 1.8 | (1.3, 2.4) | 1.3 | (0.9, 1.8) | Site 3 | 410 | 173 | 2.4 | (1.7, 3.2) | 1.4 | (1.0, 2.0) | Site 4 | 761 | 147 | 1.1 | (0.8, 1.5) | 1.1 | (0.8, 1.6) | Age at baseline (in years) | | | | | | | 16–24 | 43 | 16 | 2.2 | (1.1, 4.3) | 1.4 | (0.7, 3.0) | 25–34 | 664 | 217 | 2.2 | (1.6, 3.0) | 2.0 | (1.4, 2.8) | 35–44 | 1235 | 324 | 1.7 | (1.3, 2.3) | 1.6 | (1.2, 2.1) | 45+ | 480 | 71 | Referent | Referent | Race | | | | | | | Black | 1239 | 430 | 2.1 | (1.6, 2.6) | 1.7 | (1.3, 2.3) | Other | 1183 | 198 | Referent | Referent | Education at baseline | | | | | | | <High school | 906 | 289 | 1.8 | (1.4, 2.4) | 1.6 | (1.2, 2.1) | High school | 763 | 209 | 1.5 | (1.2, 2.0) | 1.5 | (1.1, 1.9) | >High school | 750 | 129 | Referent | Referent |
| Time-dependent factors | | | | | | | Visit (0–10) | | | 0.9 | (0.9, 1.0) | 1.0 | (0.9, 1.0) | CD4+ group (cells/μL) | | | | | | | 0–199 | 567 | 147 | 1.0 | (0.8, 1.3) | | | 200–499 | 1213 | 308 | 1.1 | (0.9, 1.5) | | | ≥500 | 598 | 166 | Referent | | | Trichomoniasis at preceding visit | | | | | | | Yes | 180 | 117 | 2.2 | (1.7, 2.8) | 1.8 | (1.4, 2.4) | No | 2240 | 510 | Referent | Referent | Vaginal Candidal culture at preceding visit | | | | | | | Yes | 804 | 247 | 1.2 | (1.0, 1.4) | | | No | 1612 | 377 | Referent | Human papillomavirus at preceding visit | | | | | | | Yes | 1468 | 432 | 1.3 | (1.0, 1.5) | 1.3 | (1.0, 1.5) | No | 934 | 188 | Referent | Referent | Spermatozoa detected on Gram stain | | | | | | | Yes | 139 | 70 | 1.7 | (1.3, 2.4) | 1.5 | (1.1, 2.1) | No | 2283 | 558 | Referent | Referent | Sexual behavior during previous 6 months‡ | | | | | | | Frequent coitus, inconsistent condom use | 331 | 127 | 2.0 | (1.6, 2.7) | 1.6 | (1.2, 2.2) | Frequent coitus, consistent condom use | 431 | 146 | 1.8 | (1.4, 2.4) | 1.6 | (1.2, 2.1) | Infrequent coitus, inconsistent condom use | 240 | 65 | 1.4 | (1.0, 1.9) | 1.2 | (0.9, 1.7) | Infrequent coitus, consistent condom use | 488 | 127 | 1.4 | (1.1, 1.8) | 1.3 | (1.0, 1.7) | Not sexually active | 920 | 162 | Referent | Referent | Female sex partner during previous 6 months | | | | | | | Yes | 86 | 25 | 1.1 | (0.8, 1.7) | | | No | 2320 | 601 | Referent | | | Douching within previous 48 hours | | | | | | | Yes | 72 | 24 | 1.0 | (0.6, 1.6) | | | No | 2340 | 602 | Referent | | | Current hormonal contraception use | | | | | | | Yes | 101 | 29 | 1.2 | (0.8, 1.8) | | | No | 2319 | 599 | Referent | | | Current injection drug use | | | | | | | Yes | 304 | 131 | 1.7 | (1.4, 2.2) | | | No | 2114 | 497 | Referent | | | Crack use during previous 6 months | | | | | | | Yes | 199 | 117 | 2.2 | (1.6, 2.9) | 1.9 | (1.4, 2.6) | No | 2219 | 511 | Referent | Referent | Cigarette use during previous 6 months | | | | | | | Yes | 1639 | 484 | 1.5 | (1.2, 1.9) | | | No | 779 | 144 | Referent | | |
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