| Malodour | FVU | Cervix | Total (FVU or cervix) | |||
| Negative | Positive | Negative | Positive | Negative | Positive | |
| M genitalium positive (%) | 102 (66) | 53 (34) | 146 (68) | 70 (32) | 427 (69) | 194 (31) |
| OR | 1.64 | 1.5 | 1.4 | |||
| 95% CI | 1.2 to 2.3 | 1.1 to 2.0 | 1.2 to 1.7 | |||
| C trachomatis positive (%) | 367 (68) | 174 (32) | 386 (68) | 178 (32) | 398 (67) | 192 (33) |
| OR | 1.5 | 1.5 | 1.52 | |||
| 95% CI | 1.2 to 1.8 | 1.2 to 1.7 | 1.26 to 1.82 | |||
| M genitalium and C trachomatis negative (%) | 4444 (76) | 1405 (24) | 4390 (76) | 1397 (24) | 4422 (76) | 1404 (24) |
Association of malodour with microorganism infection was determined by comparing whiff test of a potassium hydroxide smear in turn with microorganisms found in the first void urine (FVU) (M genitalium, n = 155; C trachomatis, n = 541; no organism, n = 5849), microorganisms found in the cervix (M genitalium, n = 216; C trachomatis, n = 564; no organism, n = 5787) or microorganisms found in either the FVU or cervical swabs (M genitalium, n = 621; C trachomatis, n = 590; no organism, n = 5826). Patients positive for both M genitalium and C trachomatis (n = 42) have been excluded from the calculation.