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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Obstet Gynecol. 2015 Oct;126(4):716–723. doi: 10.1097/AOG.0000000000001032

Table 2.

Nulliparous term singleton vertex cesarean delivery rates before and after expansion of midwifery and laborist services

PRIVATELY INSURED WOMEN
(change to a 24-hour laborist/midwifery
model in 2011)		 PUBLICLY INSURED WOMEN
(24 hour laborist/midwifery model
during all years of observation)
Before
Expansion

N=1201		 After
Expansion

N=521		 p value Before
Expansion

N=1340		 After
Expansion

N=498		 p value
Primary
Cesarean
Delivery Rate		 31.7%
(n=381)		 25.0%
(n=130)		 0.005 15.5%
(n=208)		 16.1%
(n=80)		 0.78
Adjusted OR*
(95% CI)		 0.56 (0.39 – 0.81) 0.002 0.80 (0.54 – 1.17) 0.25
*

Adjusted for: maternal age, race/ethnicity, education, gestational age, epidural, induction of labor, maternal medical complication, birth weight, delivery year, and with an interaction term for insurance type.