TABLE 6. Logistic Regression Analysis on Cesarean Delivery Rate by Background Characteristics, Among All Mothers From All Survey Datasets (2002–2012)

	OR (95% CI)	aOR (95% CI)
Age, y
15–19	1.00	1.00
20–24	0.85 (0.63–1.14)	0.82 (0.60–1.12)
25–29	1.01 (0.80–1.42)	0.97 (0.72–1.31)
≥ 30	1.47 (1.11–1.94)^**	1.05 (0.78–1.41)
Place of Residence
Urban	1.00	1.00
Rural	0.90 (0.82–0.99)^*	0.96 (0.86–1.07)
Geographic Region
Central	1.00	1.00
North	0.87 (0.80–0.94)^**	0.91 (0.83–0.99)^*
South	1.02 (0. 90–1.16)	1.03 (0.99–1.18)
Mother's Education
No education	1.00	1.00
Primary	1.41 (1.08–1.85)^*	1.33 (1.00–1.78)^*
Secondary	1.01 (0.80–1.29)	0.96 (0.73–1.25)
Higher	1.11 (0.87–1.42)	0.79 (0.60–1.06)
Husband's Education
No education	1.00	1.00
Primary	1.14 (0.82–1.59)	1.21 (0.84–1.73)
Secondary	1.02 (0.74–1.39)	1.16 (0.81–1.65)
Higher	1.22 (0.89–1.68)	1.17 (0.81–1.68)
Employment
Unemployed	1.00	1.00
Employed	1.58 (1.43–1.75)^***	1.34 (1.19–1.51)^***
Place of Delivery
Public sector	1.00	1.00
Private sector	1.17 (1.08–1.26)^***	1.04 (0.95–1.14)
Wealth Index
Poorest	1.00	1.00
Poorer	0.94 (0.84–1.05)	0.94 (0.84–1.06)
Middle	1.20 (1.07–1.34)^***	1.27 (1.13–1.43)^***
Richer	1.30 (1.16–1.45)^***	1.32 (1.16–1.51)^***
Richest	1.47 (1.30–1.65)^***	1.39 (1.20–1.62)^***
Parity in Last 5 years
1	1.00	1.00
2	0.86 (0.79–0.93)^***	0.81 (0.75–0.88)^***
≥ 3	1.04 (0.90–1.18)	0.82 (0.70–0.95)^*
Age at First Birth, y
12–18	1.00	1.00
19–24	1.10 (0.98–1.22)	1.14 (1.02–1.28)^*
25–30	1.72 (1.52–1.94)^***	1.75 (1.52–2.01)^***
> 30	4.69 (3.93–5.61)^***	4.58 (3.77–5.55)^***
Birth Weight, g
Normal (2500–3999)	1.00	1.00
Low/High (< 2500 or ≥ 4000)	1.55 (1.43–1.68)^***	1.53 (1.40–1.66)^***
Birth Multiplicity
Singleton birth	1.00	1.00
Multiple birth	5.47 (4.38–6.82)^***	5.60 (4.20–7.09)^***

Abbreviations: aOR, adjusted odds ratio (for all covariates under analysis); CI, confidence interval; OR, odds ratio.
↵^*P< .05; ^** P< .01; ^*** P< .001.