marginally significantp = 0.061
The protective effect of preeclampsia against moderate-to-severe BPD was significant only in infants born at 29–31 weeks (aOR 0.46, 95% CI 0.24–0.88) and not in those born before 29 weeks (aOR 0.84, 95% CI 0.43–1.65), with a marginally significant interaction term ( p = 0.061).