Incident sexually transmitted infections
| Infection | No. of cases | Incidence per 100 person-years of follow-up (95% CI) |
|---|---|---|
| Gonorrhea | 16 | 32.8 (19.4 to 52.2) |
| Urethral | 5 | |
| Pharyngeal | 2 | |
| Rectal | 6 | |
| Multiple sites | 3 | |
| Chlamydia | 16 | 32.8 (19.4 to 52.2) |
| Urethral | 7 | |
| Pharyngeal | 1 | |
| Rectal | 8 | |
| Lymphogranuloma venereum (rectal) | 4 | 8.2 (2.6 to 19.8) |
| Syphilis | 4 | 8.2 (2.6 to 19.8) |
Note: CI = confidence interval.