TABLE 3.
Sensitivity, specificity, PPV, and NPV of BVBlue test compared to the results of the Amsel and Nugent methods
| Comparison method | No. of women | Sensitivity (% [95% CI]) | Specificity (% [95% CI]) | PPV (% [95% CI]) | NPV (% [95% CI]) |
|---|---|---|---|---|---|
| Amsel methoda | 285 | 88 (81-93) | 91 (85-94) | 87 (80-92) | 92 (86-95) |
| Amsel methodb | 251 | 92 (85-96) | 93 (88-96) | 89 (82-94) | 95 (90-98) |
| Nugent methodb | 252 | 88 (81-93) | 95 (91-98) | 93 (87-97) | 91 (86-95) |
| Nugent methodc | 287 | 79 (72-85) | 97 (92-99) | 94 (89-97) | 82 (76-87) |
a
All women were included in this analysis.
b
Women with intermediate flora (NS of 4 to 6) were excluded from this analysis.
c
Women with intermediate flora included and an NS of 4 to 10 are considered BV positive.