Syphilis infection in relation to syphilis risk factors in HIV-positive and HIV-negative individuals at St Paul's Hospital, 2010
| HIV positive | HIV negative | |||||
|---|---|---|---|---|---|---|
| Characteristics | Number (%) tested | Number (%) positive for syphilis | Crude OR (95% CI) | Number (%) tested | Number (%) positive for syphilis | Crude OR (95% CI) |
| Blood transfusion | ||||||
| No | 274 (89.5) | 28 (10.2) | 1 | 216 (96.4) | 3 (1.4) | – |
| Yes | 32 (10.5) | 2 (6.2) | 0.59 (0.13 to 2.58) | 8 (3.6) | 0 | |
| Multiple sexual partner | ||||||
| No | 193 (63.1) | 19 (9.8) | 1 | 195 (87.1) | 2 (1) | 1 |
| Yes | 113 (36.9) | 11 (9.7) | 0.99 (0.45 to 2.16) | 29 (12.9) | 1 (3.4) | 3.45 (0.3 to 39.2) |
| Unsafe injection | ||||||
| No | 267 (87.3) | 27 (10.1) | 1 | 219 (97.8) | 3 (1.4) | – |
| Yes | 39 (12.7) | 3 (7.7) | 0.71 (0.21 to 2.57) | 5 (2.2) | 0 | |
| Syphilis family history | ||||||
| No | 281 (91.8) | 26 (9.3) | 1 | 200 (89.3) | 2 (1) | 1 |
| Yes | 25 (8.2) | 4 (16) | 1.87 (0.60 to 5.86) | 24 (10.7) | 1 (4.2) | 4.3 (0.38 to 49) |
| STIs | ||||||
| No | 167 (54.6) | 11 (6.6) | 1 | 182 (81.2) | 2 (1.1) | 1 |
| Yes | 139 (45.4) | 19 (13.7) | 2.25 (1.03 to 4.9) | 42 (18.8) | 1 (2.4) | 2.2 (0.19 to 24.8) |
STIs, sexually transmitted infections.