Clinic |
Sheffield | 1.00 | | | 1.00 | | | 1.00 | | | 1.00 | | |
St Thomas's | 0.90 | 0.73–1.12 | | 1.22 | 0.90–1.66 | | 1.72 | 1.14–2.59 | | 0.44 | 0.35–0.55 | |
MMC | 0.61 | 0.50–0.74 | <0.001 | 0.71 | 0.52–0.96 | <0.005 | 0.33 | 0.19–0.58 | <0.001 | 0.53 | 0.44–0.64 | <0.001 |
Age group |
13–15 | 2.20 | 0.91–5.33 | | 1.11 | 0.26–4.73 | | 18.98 | 5.99–60.09 | | 30.73 | 15.48–61.00 | |
16–19 | 3.07 | 2.24–4.22 | | 1.30 | 0.83–2.05 | | 14.75 | 6.69–32.55 | | 15.28 | 9.65–24.19 | |
20–24 | 2.27 | 1.70–3.03 | | 1.27 | 0.87–1.86 | | 4.47 | 2.01–9.92 | | 8.15 | 5.19–12.78 | |
25–34 | 1.41 | 1.05–1.88 | | 1.13 | 0.79–1.63 | | 1.95 | 0.87–4.40 | | 4.69 | 2.99–7.36 | |
35+ | 1.00 | | <0.001 | 1.00 | | 0.72 | 1.00 | | <0.001 | 1.00 | | <0.001 |
Sexual orientation |
Heterosexual | 1.00 | | | 1.00 | | | 1.00 | | | 1.00 | | |
Homo/bisexual | 0.54 | 0.24–1.24 | 0.11 | 0.44 | 0.11–1.80 | 0.19 | 0.58 | 0.08–4.29 | 0.56 | 0.08 | 0.01–0.55 | <0.001 |
Ethnic group |
White | 1.00 | | | 1.00 | | | 1.00 | | | 1.00 | | |
Black Caribbean | 0.30 | 0.21–0.45 | | 0.59 | 0.38–0.91 | | 3.13 | 2.06–4.76 | | 2.08 | 1.62–2.68 | |
Black African | 0.45 | 0.27–0.77 | | 0.48 | 0.23–1.01 | | 2.34 | 1.24–4.41 | | 0.78 | 0.47–1.29 | |
Asian | 0.38 | 0.19–0.74 | | 0.82 | 0.40–1.69 | | 1.59 | 0.62–4.04 | | 1.26 | 0.81–1.98 | |
Other/mixed | 0.70 | 0.51–0.96 | <0.001 | 0.56 | 0.33–0.93 | <0.01 | 3.23 | 1.82–5.74 | <0.001 | 1.16 | 0.84–1.48 | <0.001 |
Number of partners in past 12 months* |
0–1 | 1.00 | | | 1.00 | | | 1.00 | | | 1.00 | | |
2 | 1.11 | 0.92–1.35 | | 1.03 | 0.78–1.37 | | 1.58 | 1.11–2.26 | | 1.41 | 1.18–1.69 | |
3+ | 1.26 | 1.02–1.54 | 0.09 | 1.13 | 0.83–1.55 | 0.75 | 1.82 | 1.22–2.71 | <0.005 | 1.57 | 1.30–1.90 | <0.001 |
Previous STI | 0.62 | 0.51–0.75 | <0.001 | 0.66 | 0.50–0.86 | <0.005 | 0.93 | 0.66–1.30 | 0.18 | 0.89 | 0.76–1.06 | 0.18 |
Ever injected drugs | 0.57 | 0.23–1.41 | 0.19 | 0.59 | 0.14–2.41 | 0.42 | | — | — | 0.84 | 0.40–1.80 | 0.65 |