. Author manuscript; available in PMC: 2014 Dec 18.

Published in final edited form as: Am J Obstet Gynecol. 2014 May 22;211(3):308.e1–308.e6. doi: 10.1016/j.ajog.2014.05.030

TABLE 4.

Regression results: factors associated with composite severe neonatal morbidity^a

Variable	OR	95% CI	P value
PPROM prior to 25 wks’ gestation	2.57	1.72–3.83	< .001
Male infant	1.58	1.18–2.11	.002
Delivery gestational age (per 1-wk interval)	0.53	0.49–0.57	< .001
Cesarean delivery	1.40	1.05–1.87	.022
Chorioamnionitis	1.35	0.91–2.01	.138

CI, confidence interval; OR, odds ratio; PPROM, preterm premature rupture of membranes.

Other factors included in the initial model but not remaining in the final model (P > .20) included race/ethnicity, maternal drug use, and treatment group (magnesium sulfate vs placebo).

Manuck. Outcomes following early PPROM. Am J Obstet Gynecol 2014.