Factors | No. of syphilis seroconversions | Cumulative PY | Syphilis incidence (/100 PY) | Univariate | Multivariate | ||
---|---|---|---|---|---|---|---|
HR (95% CI) | p Value | Adjusted HR (95% CI) | p Value | ||||
Total | 17 | 152.95 | 11.11 | ||||
Ever had female sex partner(s) | |||||||
No | 9 | 96.89 | 9.29 | 1.00 | |||
Yes | 8 | 54.64 | 14.64 | 5.56 (1.10 to 27.05) | 0.038 | 5.09 (1.02 to 25.57) | 0.048 |
Other | 0 | 0 | – | – | |||
Number of female sex partners since last investigation | |||||||
≤1 | 16 | 149.9 | 10.67 | 1.00 | |||
≥2 | 1 | 3.05 | 32.79 | 9.22 (1.13 to 75.37) | 0.038 | ||
Seeking partners in bar/dancing hall/tearoom/saloon | |||||||
No | 11 | 129.41 | 8.5 | 1.00 | |||
Yes | 6 | 23.55 | 25.48 | 3.12 (0.75 to 13.07) | 0.119 | ||
Consistent condom use during oral sex with regular partners in the past 6 months | |||||||
No | 1 | 6.24 | 16.03 | 1.00 | |||
Yes | 16 | 146.71 | 10.91 | 0.24 (0.03 to 1.99) | 0.188 | ||
Consistent condom use during oral sex with casual partners in the past 6 months | |||||||
No | 0 | 4.37 | 0 | 1.00 | |||
Yes | 8 | 92.58 | 8.64 | – | |||
Consistent condom use during anal sex with regular partners in the past 6 months | |||||||
No | 2 | 24.52 | 8.16 | 1.00 | |||
Yes | 15 | 128.43 | 11.68 | 0.57 (0.11 to 2.80) | 0.485 | ||
Consistent condom use during anal sex with casual partners in the past 6 months | |||||||
No | 0 | 19.80 | 0 | 1.00 | |||
Yes | 11 | 83.21 | 13.22 | – |
MSM, men who have sex with men; PY, person-years.