Fig. 5

Receiver operating characteristic curves for assessing NICHD/NHLBI BPD severity using mLUS score and mLUS score. Two Panels respectively represent ROC curves for A moderate and severe BPD and B severe BPD. Different colors represent ROC curves for mLUS score (red) and cLUS score (green). Grey line represents the reference line. The areas under the curves for moderate and severe BPD shows significant difference between mLUS score and cLUS score. Table shows areas under the curves and 95% confidence interval. P-values for these comparisons are calculated. BPD: bronchopulmonary dysplasia; ROC curve: receiver operating characteristic curve; mLUS score: modified lung ultrasound score; cLUS score: classic lung ultrasound score