Table 2. Demographic and behavioral factors associated with incident TV.
| Unadjusted | Adjusted* | |||||||
|---|---|---|---|---|---|---|---|---|
| Visits with TV N=400 |
Visits without TV N=15, 859 |
HR | (95% CI) | p-value | HR | (95% CI) | p-value | |
| Nugent score at prior study visit | ||||||||
| 0-3 (reference) | 118 (30) | 7,839 (49) | 1.00 | --- | --- | 1.00 | --- | --- |
| 4-6 (intermediate) | 67 (17) | 2,555 (16) | 1.73 | (1.28, 2.33) | <0.001 | 1.63 | (1.21, 2.19) | 0.001 |
| 7-10 (BV) | 215 (54) | 5,465 (35) | 2.53 | (2.02, 3.17) | <0.001 | 2.40 | (1.92, 3.00) | <0.001 |
| Enrollment characteristics | ||||||||
| Age | ||||||||
| <25 years | 174 (44) | 6,166 (39) | 1.00 | --- | --- | 1.00 | --- | --- |
| 25-29 years | 94 (23) | 4,595 (29) | 0.77 | (0.60, 0.99) | 0.04 | 0.82 | (0.64, 1.05) | 0.12 |
| 30-34 years | 68 (17) | 3,284 (21) | 0.83 | (0.62, 1.10) | 0.19 | 0.79 | (0.58, 1.05) | 0.10 |
| 35-39 years | 32 (8) | 710 (4) | 1.97 | (1.34, 2.90) | 0.001 | 0.99 | (0.65, 1.50) | 0.96 |
| >40 years | 32 (8) | 1,104 (7) | 1.47 | (0.99, 2.18) | 0.06 | 0.74 | (0.45, 1.21) | 0.23 |
| Married or co-habiting | 247 (62) | 11,359 (72) | 0.64 | (0.52, 0.78) | <0.001 | 0.88 | (0.64, 1.22) | 0.45 |
| At least some secondary school | 207 (52) | 9,864 (62) | 0.64 | (0.53, 0.78) | <0.001 | |||
| Behaviors at each visit | ||||||||
| Sex partners in the past 3 months | ||||||||
| none | 4 (1) | 194 (1) | 1.01 | (0.38, 2.69) | 0.98 | |||
| 1 (reference) | 385 (96) | 15,336 (97) | 1.00 | --- | --- | |||
| >1 | 11 (3) | 329 (2) | 1.48 | (0.82, 2.68) | 0.20 | |||
| Vaginal sex in the past week | 307 (77) | 12,979 (82) | 0.72 | (0.57, 0.91) | 0.006 | |||
| Unprotected sex in the past week1 | 104 (26) | 3,951 (25) | 1.07 | (0.86, 1.34) | 0.53 | 1.02 | (0.81, 1.28) | 0.86 |
| Hormonal contraception | ||||||||
| None/non-hormonal methods | 145 (36) | 3,966 (25) | 1.00 | --- | --- | 1.00 | --- | --- |
| Oral contraceptive use | 63 (16) | 3,285 (21) | 0.44 | (0.33, 0.59) | <0.001 | 0.64 | (0.47, 0.89) | 0.007 |
| Injectable contraceptive use | 188 (47) | 8,384 (53) | 0.52 | (0.42, 0.64) | <0.001 | 0.60 | (0.47, 0.78) | <0.001 |
| Implant | 4 (1) | 224 (1.41) | 0.39 | (0.15, 1.03) | 0.06 | 0.57 | (0.20, 1.60) | 0.29 |
| TV at baseline | 71 (18) | 886 (6) | 3.40 | (2.62, 4.42) | <0.001 | 2.65 | (2.03, 3.48) | <0.001 |
1
Versus sex with a condom or no sex
*
Stratified by site and adjusted for age (category), marital status, hormonal contraceptive use (time-varying characteristic), unprotected sex (time-varying characteristic) and TV at baseline.