highly significantp < 0.001
In the unadjusted analysis, the associations remained highly significant for both moderate-to-severe BPD or death (Crude OR , 5.64; 95% CI , 3.35–9.50; p < 0.001) and any BPD or death (Crude OR , 4.87; 95% CI , 3.09–7.68; p < 0.001).