Incidence rates of interval, study visit, and combined urethral and anal gonorrhoea and chlamydia infections in the Health In Men Study
| Interval diagnoses (from June 2000) | Study visit diagnoses (from January 2003) | Combined (from January 2003) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| PY | n* | Incidence(/100 PY; 95% CI) | PY | n* | Incidence(/100 PY; 95% CI) | PY | n† (interval/study visit) | Incidence(/100 PY; 95% CI) | |
| PY, person-years. | |||||||||
| The discrepancies in PYs were due to missing reports and inhibited NAATs. | |||||||||
| *Number of incident cases. | |||||||||
| †The question about self-reported anal chlamydia was added to the questionnaire in January 2002. | |||||||||
| Gonorrhoea | |||||||||
| Urethral | 4507 | 172 | 3.82 (3.28 to 4.42) | 3020 | 8 | 0.26 (0.11 to 0.52) | 3010 | 105 (97/8) | 3.49 (2.86 to 4.21) |
| Anal | 4512 | 96 | 2.13 (1.73 to 2.59) | 3017 | 29 | 0.96 (0.64 to 1.38) | 3011 | 89 (62/29) | 2.96 (2.38 to 3.62) |
| Chlamydia | |||||||||
| Urethral | 4499 | 315 | 7.00 (6.27 to 7.79) | 3018 | 25 | 0.83 (0.54 to 1.22) | 3002 | 223(200/28) | 7.43 (6.52 to 8.43) |
| Anal† | 3681 | 81 | 2.20 (1.75 to 2.73) | 3016 | 83 | 2.75 (2.20 to 3.40) | 3011 | 150 (74/83) | 4.98 (4.23 to 5.82) |