Table 4.
Performance of self- and clinician-tests to the clinical diagnosis of BV (modified Amsel’s criteria)a
| Total tested |
True Positive (TP) |
False Positive (FP) |
True Negative (TN) |
False Negative (FN) |
Sensitivity (TP/TP+FN) |
Specificity (TN/TN+FP) |
|||
|---|---|---|---|---|---|---|---|---|---|
| % | 95% CI | % | 95% CI | ||||||
| Self pH | 77 | 16 | 18 | 37 | 6 | 73 | 50–89.3 | 67 | 53–79 |
| Clinician pH | 127 | 32 | 34 | 61 | 0 | 100 | 89.1–100 | 64 | 54–74 |
| Self Sialidase | 52 | 4 | 4 | 38 | 6 | 40 | 12–74 | 90 | 77–97 |
| Clinician Sialidase | 105 | 14 | 9 | 69 | 13 | 52 | 32–71 | 88 | 80–94 |
a
Total n tested varies due to missing data; more participants had clinician-testing than self-testing.