Table 5.

Receiver operating characteristic curves

Indicator	Cut-off	AUC	P	Sensitivity	Specificity	Youden’s index	95% CI
Symptom	0.522	0.733	P < 0.05	0.545	0.92	0.465	0.686–0.779
Number of C-section deliveries	0.444	0.556	P < 0.05	0.23	0.881	0.111	0.506–0.606
Uterus position	0.389	0.603	P < 0.05	0.56	0.638	0.198	0.554–0.652
TRM	4.15	0.771	P < 0.05	0.878	0.713	0.591	0.723–0.819
Three indicators	0.346	0.805	P < 0.05	0.713	0.846	0.559	0.761–0.848