Symptom | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
---|---|---|---|---|
*p<0.05 and **p<0.01, the p values (χ2 test) refer to the differences between having and not having discharge symptoms in terms of anatomical sites of the discharge. | ||||
†Performance as compared to PCR test using the corresponding specimens. | ||||
‡Performance as compared to PCR test using cervical specimens. | ||||
NPV, negative predictive value; PCR, polymerase chain reaction; PPV, positive predictive value. | ||||
Vaginal discharge | ||||
Yes (n = 921) | 36.6 | 99.2 | 88.2 | 91.0 |
No (n = 576) | 26.9 | 99.0 | 80.8 | 89.6 |
Cervical discharge† | ||||
Yes (n = 537) | 62.0** | 96.5 | 75.4 | 93.6 |
No (n = 960) | 41.5 | 98.7 | 81.7 | 92.3 |
Vaginal discharge‡ | ||||
Yes (n = 921) | 53.3 | 97.0 | 72.7* | 93.3 |
No (n = 576) | 44.2 | 99.4 | 91.9 | 92.0 |