Characteristic | Used (N = 93), N (%) | Crude PRa (95% CI) | p value | Adjusted PRa (95% CI) | p value |
---|---|---|---|---|---|
Age, years: Mean(SD) | 22.6 (1.2) | 1.30 (1.12–1.50) | < 0.01 | 1.23 (1.07–1.43) | 0.01 |
Study year | |||||
Year 1 & 2 | 49 (17.0) | Reference | |||
Year 3, 4 & 5 | 44 (23.2) | 1.37 (0.95–1.97) | 0.09 | – | – |
College type | |||||
Science | 21 (14.0) | Reference | |||
Arts | 72 (21.9) | 1.56 (1.00–2.44) | 0.05b | – | – |
Pregnancy history | |||||
No | 82 (18.4) | Reference | |||
Yes | 11 (32.4) | 1.76 (1.04–2.97) | 0.04 | – | – |
Emergency pill in 6 months | |||||
No | 55 (16.1) | Reference | Reference | ||
Yes | 38 (27.5) | 1.71 (1.19–2.46) | < 0.01 | 1.33 (0.89–1.98) | 0.16 |
Number of sexual partners | |||||
None | 32 (13.8) | Reference | |||
One | 55 (24.4) | 1.77 (1.19–2.63) | 0.01 | – | – |
Two or more | 6 (27.3) | 1.98 (0.93–4.21) | 0.08 | – | – |
Ever had sex | |||||
No | 30 (13.2) | Reference | Reference | ||
Yes | 63 (25.1) | 1.91 (1.28–2.83) | < 0.01 | 1.54 (0.99–2.40) | 0.05 |
Alcohol use in past 3 months | |||||
No | 62 (17.4) | Reference | |||
Yes | 31 (25.4) | 1.46 (1.00–2.14) | 0.05b | – | – |
Unprotected sex with > 1 partner of unknown HIV status | |||||
No | 84 (18.6) | Reference | |||
Yes | 9 (33.3) | 1.79 (1.02–3.16) | 0.04 | – | – |
Anal sex in the past 6 months | |||||
No | 85 (18.9) | Reference | |||
Yes | 8 (28.6) | 1.51 (0.82–2.81) | 0.19 | – | – |
Transactional sex in past 6 months | |||||
No | 83 (18.5) | Reference | |||
Yes | 10 (33.3) | 1.80 (1.04–3.10) | 0.03 | – | – |
Injection drug use in the past 6 months | |||||
No | 90 (19.1) | Reference | |||
Yes | 3 (37.5) | 1.96 (0.79–4.90) | 0.15 | – | – |
STI in the past 12 months | |||||
No | 65 (17.8) | Reference | |||
Yes | 28 (24.8) | 1.40 (0.94–2.06) | 0.09 | – | – |
PEPc use in the past 12 months | |||||
No | 86 (18.7) | Reference | |||
Yes | 7 (38.9) | 2.08 (1.13–3.84) | 0.02 | – | – |
Desired to become pregnant in the past 12 months | |||||
No | 77 (17.9) | Reference | |||
Yes | 16 (33.3) | 1.87 (1.19–2.92) | 0.01 | – | – |