Behavior Profiles at 2 Years for Children Born Extremely Preterm with Bronchopulmonary Dysplasia.

Objective: To characterize behavior of 2-year-old children based on the severity of bronchopulmonary dysplasia (BPD).

Study Design: We studied children born at 22-26 weeks of gestation and assessed at 22-26 months of corrected age with the Child Behavior Checklist (CBCL). BPD was classified by the level of respiratory support at 36 weeks of postmenstrual age.