Table 4 The diagnostic performance of uterine arteries’ RI, PI, and S/D ratios in discrimination of both the infertile and fertile groups
From: Role of uterine artery Doppler in assessment of unexplained infertility
| Item | Cut-off | Sensitivity | Specificity | PPV | NPV | Accuracy |
|---|---|---|---|---|---|---|
| RI | >0.67 | 100% | 96.7% | 97.5% | 100% | 98.6% |
| PI | >1.95 | 95% | 86.7% | 90.47% | 92.86% | 91.42% |
| S/D | >3 | 100% | 96.7% | 97.56% | 100% | 98.57% |