Fig. 3From: Effect of sagittal screw angle and distance of screw apex to superior endplate on adjacent segment disease after posterolateral lumbar fusion: a retrospective studyROC curve of risk factors predicting ASD. A. ROC curve of distance predicting incidence of ASD. The AUC was 0.794. B.ROC curve of sagittal angle predicting incidence of ASD. The AUC was 0.788. ROC Receiver operator curve, AUC Area under the curveBack to article page