Table 3 Cut-off values for the prediction of clinical pregnancy rates
From: Is a high serum copper concentration a risk factor for implantation failure?
Parameter | Cut-off | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
Copper | 159/160 | 0.88 | 0.26 | 0.68 | 0.57 |
Zinc | 89/90 | 0.88 | 0.34 | 0.71 | 0.62 |
Cu/Zn ratio | 1.59/1.60 | 0.98 | 0.29 | 0.71 | 0.88 |