The Effect of Ethnic Variation on the Success of Induced Labour in Nulliparous Women with Postdates Pregnancies

Table 3

Odds ratios (OR) and 95% confidence intervals (CI) derived from multiple logistic regression analysis for caesarean section in relation to demographic and perinatal variables.

	OR (95% CI)
Mother’s age at delivery (years)	1.04 (1.02–1.06)	0.001
Ethnicity
White	1.00^‡
Black	3.26 (1.31–8.08)	0.011
Asian	2.07 (0.95–4.51)	0.066
BMI (kg/m^2)	1.03 (1–1.05)	0.026
Smoking
Nonsmoker (never)	1.00
Current smoker	0.86 (0.51–1.47)	0.590
Previous smoker	0.86 (0.64–1.16)	0.320
Presence of meconium	1.98 (1.47–2.69)	<0.001
Use of an epidural	2.28 (1.73–2.99)	<0.001
Fetal gender
Female	1.00
Male	1.04 (0.78–1.37)	0.808
Birth weight (per 100 gr increase)	1.07 (1.03–1.11)	0.001
Head circumference at birth (per 1 cm increase)	1.23 (1.12–1.36)	<0.001

Reference category.