Fig. 3Â From: Predicting risk of severe neonatal outcomes in preterm infants born from mother with prelabor rupture of membranesCalibration curves. A. Calibration curves of the SNO nomogram. B. Calibration curves of the internal validation. The x-axis represents the predicted SNO risk. The y-axis represents the actual occurrence of SNO. The diagonal dotted line represents a perfect prediction by an ideal model. The solid line represents the performance of the nomogram, of which a closer fit to the diagonal dotted line represents a better predictionBack to article page