Univariate and multivariate Cox regression results: relative hazards of gonorrhoea reinfection
| Variable | Univariate hazard ratio (95% CI) p value | Multivariate hazard ratio (n=8036) (95% CI) p value |
|---|---|---|
| Variables not significant at the p<0.05 level from univariate analyses that were not included: patient ever used non-injection cocaine, patient reports exchange sex ever, sexual contact ever with an IDU, and year of initial infection. | ||
| Sex | ||
| Male | 1.74 (1.44 to 2.11) | 1.83 (1.37 to 1.57) |
| <0.001 | 0.001 | |
| Age above or below median | ||
| ≤25 years old | 1.30 (1.14 to 1.48) | 1.43 (1.23 to 1.66) |
| <0.001 | <0.001 | |
| Reason for visit | ||
| None recorded | – | |
| STD symptoms | 1.06 (0.79 to 1.43) | |
| 0.692 | ||
| STD contact | 0.48 (0.31 to 0.74) | 0.59 (0.41 to 0.85) |
| 0.001 | 0.005 | |
| Previous positive STD test result | 0.64 (0.30 to 1.36) | |
| 0.246 | ||
| HIV testing | 0.55 (0.13 to 2.27) | |
| 0.411 | ||
| Check up | 0.62 (0.34 to 1.13) | |
| 0.116 | ||
| Number of sex partners | ||
| ≥2 past month | 1.39 (1.22 to 1.58) | 1.22 (1.06 to 1.41) |
| <0.001 | 0.005 | |
| Reports “any” condom use | ||
| Yes | 0.79 (0.61 to 1.01) | 1.61 (1.12 to 2.30) |
| 0.057 | 0.009 | |
| Ever used injection drugs | ||
| Yes | 0.70 (0.52 to 0.94) | 0.75 (0.55 to 1.03) |
| 0.017 | 0.078 | |
| Sexual contact ever with someone who engages in exchange sex | 1.47 (1.23 to 1.75) | 1.51 (1.24 to 1.83) |
| <0.001 | <0.001 | |