The Association between Early Artificial Amniotomy and Chorioamnionitis in Nulliparous Induction of Labor

Table 5

Multivariable logistic analyses. Association between early amniotomy and chorioamnionitis, controlling for potential confounders.

Variable	Odds ratio	95% CI	value
Association with chorioamnionitis, among those with vaginal delivery
Early amniotomy	0.56	0.34–0.93	0.02
Confounders
Intrauterine pressure catheter	0.83	0.54–1.28	0.41
Fetal scalp electrode	0.86	0.54–1.38	0.54
Epidural anesthesia	0.94	0.69–1.27	0.68
Year of delivery	0.95	0.81–1.11	0.53
Any cervical ripening	0.90	0.62–1.30	0.58
Association with chorioamnionitis, among all patients
Early amniotomy	0.76	0.52–1.10	0.15
Confounders
Location of prenatal care	1.33	1.00–1.76	0.04
Gestational age at delivery	1.02	0.96–1.08	0.61
Epidural anesthesia	0.99	0.98–1.01	0.51
Meconium stained amniotic fluid	0.99	0.97–1.01	0.44
Any cervical ripening	0.92	0.67–1.26	0.60