Table 1.
Accuracy of direct wet mount and staining techniques versus Diamond’s culture, the gold standard test for diagnosis of vaginal trichomoniasis
| Culture | Accuracy measure | |||||||
|---|---|---|---|---|---|---|---|---|
| Positive | Negative | Total | Variable | % | AUC &95%CI | P value | ||
| Wet mount | Positive | 13 | - | 13 | Sensitivity | 59.1 | ||
| Negative | 9 | 178 | 187 | Specificity | 100 | 0.795 &0.67-0.92 | <0.001 | |
| Total | 22 | 178 | 200 | Positive predictive value | 100 | |||
| Negative predictive value | 95.2 | |||||||
| Giemsa stain | Positive | 15 | 2 | 17 | Sensitivity | 68.2 | ||
| Negative | 7 | 176 | 183 | Specificity | 98.9 | 0.835 &0.72-0.95 | <0.001 | |
| Total | 22 | 178 | 200 | Positive predictive value | 88.2 | |||
| Negative predictive value | 96.2 | |||||||
| Acridine orange stain | Positive | 18 | - | 18 | Sensitivity | 81.8 | 0.909 & 0.81-1.0 | <0.001 |
| Negative | 4 | 178 | 182 | Specificity | 100 | |||
| Total | 22 | 178 | 200 | Positive predictive value | 100 | |||
| Negative predictive value | 97.8 | |||||||