Table 3.
Performance of BVBlue Rapid Test compared to the results of Amsel's criteria and Nugent score among sexually active women in Mysore, India, between August 2009 and January 2010.
| Variables | N | Sens% (95% CI) | Spec% (95% CI) | PPV% (95% CI) | NPV% (95% CI) | |
|---|---|---|---|---|---|---|
| All women | Amsel's criteriaa | 323 | 51 (46–57) | 94 (92–97) | 82 (78–87) | 78 (74–83) |
| Nugent scoreb | 266 | 38 (32–44) | 95 (92–97) | 90 (87–94) | 54 (48–60) | |
| Symptomatic women | Amsel's criteriaa | 188 | 52 (44–59) | 95 (92–98) | 85 (80–90) | 79 (73–85) |
| Nugent scoreb | 156 | 37 (30–45) | 95 (92–99) | 91 (87–96) | 54 (46–61) |
aAll women were included in this analysis comparing Amsel's criteria to BVBlue Rapid Test. Women with intermediate flora included as negatives (0–6) and NS of 7–10 considered BV positive. b Women with intermediate flora (NS of 4 to 6) excluded from this analysis comparing Nugent score to BVBlue Rapid Test. Sens: sensitivity; Spec: specificity; PPV: positive predictive value; NPV: negative predictive value.