Prevalence of genital chlamydial and gonococcal (according to different diagnostic criteria) infections and clinical cervicitis among FSWs in Benin, 2003–04
| Diagnostic criterion | n | Number positive | % positive (95% CI) |
|---|---|---|---|
| CI, confidence interval; CT, C trachomatis; NG, N gonorrhoeae. | |||
| *Positive by both NG-Amplicor (manufacturer’s instructions) and the 16SrRNA PCR. | |||
| †At least two out of three Amplicor tests with OD>2.0 for NG.9 | |||
| ‡The clinical diagnosis of cervicitis leads to treatment of both NG and CT. | |||
| NG-positive (reference standard*) | 1084 | 50 | 4.6 (3.4 to 6.0) |
| NG-positive (Amplicor – manufacturer’s instructions) | 1084 | 81 | 7.5 (6.0 to 9.2) |
| NG-positive (Amplicor–stringent criterion†) | 1084 | 72 | 6.6 (5.2 to 8.3) |
| NG-positive (rapid test – cervical swab) | 1084 | 64 | 5.9 (4.6 to 7.5) |
| NG-positive (rapid test – vaginal swab) | 759 | 33 | 4.4 (3.0 to 6.1) |
| CT-positive (reference standard) | 1084 | 51 | 4.7 (3.5 to 6.2) |
| NG and/or CT-positive (reference standard) | 1084 | 93 | 8.6 (7.0 to 10.4) |
| Cervicitis according to clinical algorithm‡ | 998 | 199 | 19.9 (17.5 to 22.6) |