Predictive value of cervical length for the prediction of pre-term birth before 30, 34 and 37 weeks
| Gestation | Cerclage N=105 AUC (95% CI) | No Cerclage N=442 AUC (95% CI) | Comparison* p value |
|---|---|---|---|
| <30/40 | 0.88 (0.74 to 1.0) | 0.77 (0.66 to 0.91) | 0.165 |
| <34/40 | 0.80 (0.66 to 0.93) | 0.72 (0.63 to 0.81) | 0.509 |
| <37/40 | 0.76 (0.66 to 0.88) | 0.65 (0.59 to 0.71) | 0.332 |
↵* Logistic regression comparing test performance between cerclage and no cerclage groups.