Table 3.

Frequency and odds of cesarean delivery by maternal race and ethnicity in multiparous (prior vaginal deliveries only) cohort

	Non- Hispanic white	Non-Hispanic black			Asian			Hispanic
	N (%, 95%CI)	N (%, 95%CI)	Unadjusted OR (95%CI)	aOR* (95% CI)	N (%, 95%CI)	Unadjusted OR (95%CI)	aOR* (95% CI)	N (%, 95%CI)	Unadjusted OR (95%CI)	aOR* (95% CI)
Cesarean delivery (vs. vaginal delivery)†	873 (4.9, 4.6–5.2)	712 (8.4, 7.9–9.0)	1.78 (1.61–1.97)	1.51 (1.33–1.70)	105 (5.8, 4.8–6.9)	1.20 (0.97–1.48)	1.00 (0.80–1.25)	718 (6.0, 5.6–6.5)	1.24 (1.12–1.37)	1.12 (0.98–1.27)
Indication (vs. vaginal delivery)‡
Non-reassuring fetal status	210 (1.2, 1.0–1.3)	361 (4.3, 3.9–4.7)	3.75 (3.16–4.46)	3.12 (2.54–3.84)	27 (1.5, 0.9–2.1)	1.28 (0.85–1.92)	1.24 (0.81–1.90)	282 (2.4, 2.1–2.6)	2.02 (1.69–2.42)	1.48 (1.18–1.85)
Labor dystocia or failed induction	233 (1.3, 1.2–1.5)	210 (2.5, 2.2–2.8)	1.97 (1.63–2.38)	1.77 (1.42–2.21)	30 (1.7, 1.1–2.3)	1.28 (0.87–1.88)	1.38 (0.91–2.08)	232 (2.0, 1.7–2.2)	1.50 (1.25–1.80)	1.44 (1.14–1.82)
Suspected macrosomia	100 (0.6, 0.5–0.7)	34 (0.4, 0.3–0.5)	0.74 (0.50–1.10)	0.51 (0.32–0.80)	6 (0.3, 0.1–0.6)	0.60 (0.26–1.36)	0.33 (0.14–0.78)	72 (0.6, 0.5–0.7)	1.09 (0.80–1.47)	1.06 (0.72–1.56)
Elective	167 (0.9, 0.8–1.1)	31 (0.4, 0.2–0.5)	0.41 (0.28–0.60)	0.43 (0.28–0.66)	21 (1.2, 0.7–1.7)	1.25 0.79–1.98)	0.76 (0.47–1.26)	46 (0.4, 0.3–0.5)	0.42 (0.30–0.58)	0.51 (0.34–0.75)
Other	163 (0.9, 0.8–1.1)	74 (0.9, 0.7–1.1)	0.99 (0.75–1.31)	0.82 (0.60–1.14)	20 (1.1, 0.6–1.6)	1.22 (0.77–1.95)	0.84 (0.51–1.40)	86 (0.7, 0.6–0.9)	0.80 (0.61–1.03)	0.86 (0.62–1.20)

^*Multivariable logistic regression (cesarean delivery) and multivariable multinomial logistic regression (indication). Compared with non-Hispanic white women. Adjusted for age, BMI, diabetes, smoking, chorioamnionitis, gestational hypertension or preeclampsia, gestational age at delivery, and hospital.

^†n=39,871; n=38,831 with complete covariable data.

^‡n=39,871; n=38,828 with complete covariable data.