Table 3. Area under the curve (AUC) of receiver operating characteristic (ROC) curves for placental abruption prediction.

	Area Under the ROC Curve	Model AUC Compared to VB	Error Rate
	(95% CI)	Model AUC
Model
Vaginal Bleeding Only	0.63 (0.55, 0.71)	—	0.37
Metabolites Only	0.68 (0.58, 0.79)	P = 0.480	0.36
Vaginal Bleeding + Metabolites	0.76 (0.66, 0.85)	P = 0.003	0.29