TABLE 2.

The possible effects of perinatal risk factors on BPD development

Risk factors	OR	%95 CI	p
RDS	6.2	3.6–10.6	<0.01
PDA	4.9	2.4–9.9	<0.01
Apnea	4.1	2.5–6.9	<0.01
Late onset sepsis	2.7	1.6–4.5	<0.01
EMR	2.6	1.2–5.5	0.01
Male gender	1.6	1.0–2.7	0.04
Chorioamnionitis	3.7	0.8–16.1	0.07
Antenatal corticosteroid	0.42	0.1–1.0	0.05

BPD: Bronchopulmonary dysplasia; OR:Odds ratio; CI: Confidence interval; RDS: Respiratory distress syndrome; PDA: Patent ductus arteriosus; EMR: Early membrane rupture.