MED1 and bronchopulmonary dysplasia: The AUC for MED1 level on the 1st day of life predicting BPD was 0.740 (95% CI: 0.624–0.856, P < 0.05), with a critical value of 214.4 pg/mL and sensitivity and specificity of 77.1% and 62.9%, respectively (Fig. 2C).