Fig 2. Comparisons of the z-scores for the anthropometric measurement values at birth between the infants who developed BPD or died before 36 weeks postmenstrual age and the infants who survived until 36 weeks postmenstrual age without BPD in each gestational age group.

The box and whisker plots depict the comparisons of weight z-scores (A), length z-scores (B), and head circumference z-scores (C) at birth between the infants who developed BPD or died before 36 weeks postmenstrual age (BPD or death group) and the infants who survived until 36 weeks postmenstrual age without BPD (control group) in each gestational age group. The gray boxes represent the control group, and the black boxes represent the BPD or death group.