Baseline characteristics | Recently acquired syphilis infection prevalence | Bivariate analysis | Multivariate analysis |
---|---|---|---|
n/N (%) | Crude PR (95% CI) | Adjusted PR (95% CI) | |
Overall | 58/285 (20.4) | ||
Age, years | 0.97 (0.94–0.99) | 0.96 (0.93–0.99) | |
18–25 | 22/98 (22.5) | ||
26–30 | 13/56 (23.2) | ||
31–35 | 13/50 (26.0) | ||
36+ | 10/81 (12.4) | ||
Number of recent male/transwomen sex partners (quartiles) | |||
0–2 | 21/86 (24.4) | Ref | |
3–5 | 18/84 (21.4) | 0.88 (0.50–1.53) | |
6–10 | 8/50 (16.0) | 0.66 (0.31–1.37) | |
11+ | 11/65 (16.9) | 0.69 (0.36–1.34) | |
Role during anal sex | |||
Insertive | 5/71 (7.0) | Ref | Ref |
Receptive | 22/85 (25.9) | 3.68 (1.46–9.22) | 2.56 (1.05–6.25) |
Versatile | 31/129 (24.0) | 3.41 (1.39–8.40) | 1.99 (0.82–4.85) |
Condomless anal sex with a male partner, last 3 months | |||
No | 14/70 (20.0) | Ref | |
Yes | 44/215 (20.5) | 1.02 (0.59–1.75) | |
Condomless anal sex with stable male partners, last 3 months | |||
No | 21/97 (21.7) | Ref | |
Yes | 37/188 (19.7) | 0.91 (0.56–1.46) | |
Any anal sex partner met over the Internet in last 3 months | |||
No | 34/182 (18.7) | Ref | |
Yes | 24/103 (23.3) | 1.25 (0.78–1.98) | |
Any anal sex with an anonymous sex partner in last 3 months | |||
No | 30/140 (21.4) | Ref | |
Yes | 28/145 (19.3) | 0.90 (0.57–1.43) | |
Any anal sex in a sex club in last 3 months | |||
No | 46/244 (18.9) | Ref | |
Yes | 12/41 (29.3) | 1.55 (0.90–2.67) | |
HIV infection | |||
Negative | 31/206 (15.1) | Ref | Ref |
Known infecteda | 20/50 (40.0) | 2.66 (1.66–4.25) | 1.70 (1.11–2.61) |
Newly diagnosed | 7/29 (24.1) | 1.60 (0.78–3.31) | 1.37 (0.72–2.60) |
Any anal CT or NG infection | |||
Negative | 38/229 (16.6) | Ref | Ref |
Positive | 20/56 (35.7) | 2.15 (1.36–3.40) | 1.69 (1.09–2.60) |
Previous syphilis diagnosis (per patient interview) | |||
No | 24/213 (11.3) | Ref | Ref |
Yes | 34/71 (47.9) | 4.25 (2.71–6.66) | 3.53 (2.20–5.68) |
Alcohol use disorder (AUDIT score ≥ 8) | |||
No | 32/151 (21.2) | Ref | |
Yes | 26/134 (19.4) | 0.92 (0.58–1.45) |