Table 3. Comparison of performance among prediction models.
| Variables | Cut-off | AUC (95% CI) | Model fitness 1 McFadden R2 | Model fitness 2 Hosmer-Lemeshow Test (P-value) |
|---|---|---|---|---|
| Age (yr) | 36.5 | 0.666 (0.599–0.733) | 0.06476128 | 0.05086 |
| Progesterone (ng/mL) | 29.8 | 0.882 (0.840–0.925) | 0.2720570 | 0.002136 |
| HCG (IU/L) | 67.8 | 0.971 (0.954–0.988) | 0.5869664 | <0.000 |
| Age+progesterone | NA | 0.888 (0.802–0.907) | 0.3364037 | 0.1928 |
| Age+HCG | NA | 0.975 (0.954–0.988) | 0.6076166 | 0.01249 |
| Age+progesterone+HCG | NA | 0.977 (0.954–0.987) | 0.6234894 | <0.000 |
AUC, area under the curve; CI, confidence interval; HCG, human chorionic gonadotropin; NA, not applicable.