Table 4.

Adjusted^* odds ratios, adjusted^* means and 95% confidence intervals for non-medically indicated induction at 40 weeks vs. expectant management and outcomes

	Non Medically Indicated Induction N (%)	Expectant Management N (%)	OR	95%CI
Neonatal outcomes:
Neonatal intensive care unit admission	126 (7.5)	1172 (8.3)	0.87	0.71–1.06
Respiratory composite	26 (1.6)	321 (2.3)	0.62	0.41–0.94
Hyperbilirubinemia requiring treatment	95 (5.7)	578 (4.1)	1.02	0.80–1.30
Neonatal composite	8 (0.5)	125 (0.9)	0.55	0.26–1.15
Maternal Outcomes:
Postpartum hemorrhage	35 (2.2)	297 (2.2)	1.09	0.75–1.60
Third and fourth degree lacerations	99 (5.9)	938 (6.7)	0.82	0.66–1.03
Peripartum infection	143 (8.5)	1724 (12.2)	0.87	0.72–1.05
Mode of delivery
Spontaneous vaginal	930 (55.5)	8861 (62.9)
Operative vaginal	176 (10.5)	1453 (10.3)	1.05	0.88–1.26
Cesarean	570 (34.0)	3772 (26.8)	1.30	1.15–1.46
	Non Medically Indicated Induction		Expectant Management
	Median (interquartile range)	Adjusted mean (95%CI)	Median (interquartile range)	Adjusted mean (95%CI)
Time from labor and delivery admission to delivery in hours	17 (12–22)	18.86 (18.36–19.36)†	12 (8–18)	15.28 (14.96–15.60)
Time from delivery to discharge days	2 (2–3)	2.70 (2.59–2.81)	2 (2–3)	2.70 (2.63–2.77)

^*Adjusted for maternal age, race/ethnicity, body mass index, cigarette use, insurance status and hospital

^†P<0.05 in the generalized linear model