Table 2.
Cut-off values (ng/mL) | True positive | False positive | True negative | False negative | Sensitivity (95%CI) | Specificity (95%CI) |
15.001 | 23 | 35 | 165 | 16 | 0.59 (0.42-0.74) | 0.83 (0.77-0.88) |
24.752 | 21 | 15 | 185 | 18 | 0.54 (0.37-0.70) | 0.93 (0.88-0.96) |
Value recommended by FDA for breast cancer;
Value determined by Youden’s index in ROC plot.