Area under the receiver operator characteristic (ROC) curve.

The novel risk scores from Eq (1), with Eq (2)2 based on MRI and Kinect measurements, outperformed all other parameters and published CPD indices. The MRI- and Kinect-based CPD risk scores were the only scores with an AUCadj > 0.80, indicating very good predictive capability. The novel risk scores from Eq (1), with Equation (2)1 based on anthropometry were the only score with an AUCadj = 0.79, was the next best model. AUC in the range of 0.70–0.80 are generally considered to have fair predictive capabilities and those in the range of 0.60–0.70 are generally considered poor predictors. Note: AUC = area under the receiver operator characteristic curve, S.E. = standard error, C.I. = confidence interval, HC = maternal head circumference, SM = skeletal mapping, FPI = fetal pelvic index. p AUC = 0.50.