Table 8.

Model Results of Logistic Regression for Respiratory Diagnosis

Parameter	Odds Ratio	95% Confidence Interval	P Value
Decreasing birth weight z-score, 1 SD	1.04	0.72–1.50	0.85
Male sex	1.22	0.81–1.83	0.34
Maternal race: white	0.51	0.30–0.87	0.01
Decreasing gestational age, wk	1.15	1.01–1.30	0.04
Maternal smoking status	2.18	1.07–4.44	0.03
Antenatal corticosteroids	1.11	0.62–1.98	0.73
Multiple gestations	1.68	1.02–2.77	0.04
Cesarean section delivery	1.11	0.69–1.80	0.67
Preexisting or gestational diabetes	2.53	1.16–5.54	0.02
Preexisting hypertension	1.15	0.57–2.30	0.70
Prolonged rupture of membranes	0.97	0.55–1.71	0.91
Chorioamnionitis	1.56	0.85–2.83	0.15
Preeclampsia	1.11	0.64–1.92	0.72
Decreasing maternal age, yr	1.04	1.00–1.08	0.03

Risk factors for a respiratory diagnosis over first 2 years of life. Parametric estimates, Wald 95% confidence intervals, and P values derived from the logistic regression modeling analysis for a respiratory diagnosis over the first 2 years of life.