Table 2.
Risk factors for prevalent carcinogenic HPV infection (n=404) in 2185 women at baseline
| Characteristic | No (%) of women with characteristic | No (%) of women with HPV infection by presence of characteristic | Relative risk (95% CI) of HPV infection | |||
|---|---|---|---|---|---|---|
| With characteristic | Without characteristic | Crude | Adjusted* | |||
| Age <20 years | 939/2185 (43) | 185/939 (19.7) | 219/1246 (17.6) | 1.12 (0.94 to 1.34) | 0.97 (0.81 to1.17) | |
| Black ethnicity | 579/2172 (27) | 127/579 (21.9) | 273/1593 (17.1) | 1.28 (1.06 to 1.54) | 1.20 (0.98 to1.47) | |
| Smoker | 682/2175 (31) | 149/682 (21.8) | 254/1493 (17.0) | 1.28 (1.07 to 1.54) | 1.07 (0.88 to1.30) | |
| ≥2 sexual partners in previous year | 932/2172 (43) | 245/932 (26.3) | 156/1240 (12.6) | 2.09 (1.74 to 2.51) | 1.87 (1.54 to 2.26) | |
| Age <16 years at first sex | 612/2148 (28) | 117/612 (19.1) | 281/1536 (18.3) | 1.05 (0.86 to1.27) | 0.97 (0.79 to1.18) | |
| Use of oral contraception | 1046/2163 (48) | 197/1046 (18.8) | 203/1117 (18.2) | 1.04 (0.87 to 1.24) | - | |
| Use of condoms† | 1160/2164 (54) | 239/1160 (20.6) | 162/1004 (16.1) | 1.28 (1.07 to1.53) | 1.11 (0.93 to1.34) | |
| Chlamydia trachomatis infection | 126/2182 (5.8) | 45/126 (35.7) | 359/2056 (17.5) | 2.05 (1.59 to 2.63) | 1.57 (1.21 to 2.04) | |
| Mycoplasma genitalium infection | 71/2153 (3.3) | 20/71 (28.2) | 381/2082 (18.3) | 1.54 (1.05 to 2.26) | 1.07 (0.71 to1.63) | |
| Bacterial vaginosis | 515/2075 (25) | 133/515 (25.8) | 258/1560 (16.5) | 1.56 (1.30 to1.88) | 1.34 (1.11 to 1.63) | |
| Neisseria gonorrhoeae infection | 6/2160 (0.3) | 3/6 (50) | 398/2154 (18.5) | 2.71 (1.21 to 6.01) | 1.11 (0.46 to 2.66) | |
*Controlled for all significant variables from the unadjusted analysis and for age <20 and age <16 at first sex.
†No data on frequency of condom use.