Fig. 3

Correlation between mLUS score and short-term outcomes described as categorical variables. Panel A, B and C represent respiratory support at 40 weeks PMA, oxygen requirement at discharge and postnatal systemic steroids, respectively. The mLUS score is significantly correlated with respiratory support at 40 weeks PMA (P < 0.001), oxygen requirement at discharge (P = 0.03) and postnatal systemic steroids (P = 0.02) adjusted for gestational age. Plot elements are represented as follows: mean (circle); median (horizontal line); interquartile range (gray box); and 95% confidence interval (whiskers). Table shows Spearman correlation coefficients and results of multivariate linear regressions adjusted for gestational age. mLUS score: modified lung ultrasound score; r: Spearman correlation coefficient; β: adjusted linear regression coefficient