Gonorrhoea repeat diagnosis by patient characteristics
| Patient characteristic | Adjusted HR (95%CI) | p Value |
| Did not complete behavioural proforma | 12.5 (5.5 to 28.5) | <0.001 |
| Year of first diagnosis | ||
| 2004 | 1 | 0.02 |
| 2005 | 0.70 (0.46 to 1.07) | |
| 2006 | 0.77 (0.49 to 1.21) | |
| 2007 | 0.65 (0.39 to 1.06) | |
| 2008 | 0.12 (0.02 to 0.90) | |
| Age group* | ||
| Heterosexuals | ||
| ≤19 | 1.29 (0.89 to 1.87) | 0.29 |
| 20–29 | 1 | |
| 30–39 | 1.09 (0.62 to 1.92) | |
| 40+ | 0.60 (0.23 to 1.56) | |
| MSM | ||
| ≤19 | 1.98 (1.72 to 5.44) | 0.03 |
| 20–29 | 1 | |
| 30–39 | 0.59 (0.26 to 1.38) | |
| 40+ | 0.16 (0.02 to 1.20) | |
| Sexual orientation (20–29-year-olds)* | ||
| Heterosexuals | 1 | 0.01 |
| MSM | 2.27 (1.27 to 4.04) | |
| Ethnicity | ||
| White | 1 | 0.18 |
| Black Caribbean | 1.59 (0.96 to 2.63) | |
| Black African | 1.37 (0.54 to 3.47) | |
| Black other | 2.52 (0.34 to 18.5) | |
| Asian | 1.34 (0.74 to 2.43) | |
| Mixed/other | 1.67 (1.10 to 2.54) | |
| Resident in Sheffield | 1.27 (0.64 to 2.52) | 0.48 |
| Index of multiple deprivation percentile† | ||
| <60th (least deprived) | 1 | 0.03 |
| 60th to <85th | 0.88 (0.55 to 1.41) | |
| 85th to <95th | 0.82 (0.51 to 1.33) | |
| ≥95th (most deprived) | 1.47 (0.96 to 2.26) | |
| Reported history of gonorrhoea | 3.98 (1.64 to 9.68) | 0.004 |
| Reported history of any STI | 1.46 (0.55 to 3.85) | 0.46 |
| Number of partners (past 3 months) | ||
| 0–1 | 1 | 0.06 |
| 2–5 | 2.63 (1.10 to 6.26) | |
| 6+ | 3.04 (0.87 to 10.6) | |
| Sex with a high-risk sexual partner† (past 12 months) | 1.56 (0.68 to 3.57) | 0.30 |
| Currently a sex worker | 1.44 (0.24 to 8.53) | 0.70 |
| Ever injected drugs | 1.98 (0.35 to 11.1) | 0.46 |
Adjusted HRs with 95% CIs from multivariable Cox regression. Model included 3790 person-years at risk; 1541 persons with a ‘first’ diagnosis of gonorrhoea and 170 persons with a repeat diagnosis of gonorrhoea.
↵* Model assumes association with age group is modified by sexual orientation.
↵† See Methods section for definition.
MSM, men who have sex with men; STI, sexually transmitted infection.