Percentage of infants with BPD by race and GA in the PROP cohort of infants born at <29 weeks of gestation. Data were collected for 707 newborn infants born at <29 weeks of gestation in whom both race and BPD outcome were known. For race based on maternal self-report, and using the modified Shennan definition of BPD (ie, supplemental oxygen at 36 weeks postmenstrual age), the rate of BPD was lower for black infants at each week of GA at birth. The OR for BPD was 0.60 (95% CI, 0.42-0.85; P = .004) for black infants compared with white infants after adjusting for GA, intubation at birth, ANS use, surfactant use within 72 hours after birth, and sibling correlations.