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Variables
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Model I
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Model II
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Model III
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Model IV
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OR (95% CI)
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AOR (95% CI)
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AOR (95% CI)
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AOR (95% CI)
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|---|
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Maternal socio-economic variables
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Education
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None
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1.00
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1.00
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Primary
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1.93(1.69–2.20)*
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1.92(1.68–2.20)*
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Secondary
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2.58(2.23–2.98)*
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2.57(2.22–2.97)*
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Higher
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4.11(3.28–5.16)*
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4.10(3.26–5.14)*
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Occupation
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Not working
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1.00
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1.00
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Professional/services
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1.24(1.03–1.49)*
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1.24(1.03–1.50)*
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Sales
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1.47(1.30–1.66)*
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1.47(1.30–1.66)*
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Agriculture/manual
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1.20(1.05–1.37)*
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1.20(1.05–1.38)*
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Household wealth index
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Poorest
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1.00
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1.00
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Poorer
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1.79(1.51–2.11)*
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1.78(1.51–2.10)*
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Middle
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2.54(2.14–3.02)*
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2.53(2.13–3.01)*
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Richer
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3.71(3.08–4.47)*
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3.72(3.09–4.49)*
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Richest
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4.75(3.83–5.90)*
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4.79(3.85–5.95)*
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Type of residence
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Urban
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1.00
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1.00
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Rural
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0.86(0.76–0.96)*
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0.86(0.77–0.96)*
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Geo-political region
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Northcentral
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0.52(0.45–0.61)*
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0.52(0.45–0.61)*
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Northeast
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0.75(0.66–0.93)*
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0.75(0.66–0.93)*
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Northwest
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0.48(0.41–0.57)*
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0.48(0.41–0.57)*
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Southeast
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0.39(0.32–0.47)*
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0.39(0.32–0.47)*
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South-south
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0.49(0.42–0.58)*
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0.49(0.41–0.58)*
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Southwest
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1.00
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1.00
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Bio-demographic variables
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Maternal age at child’s birth
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< 20 years
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1.00
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1.00
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20–34 years
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2.20(1.72–2.82)*
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0.92(0.71–1.20)
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> = 35 years
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2.61(2.00–3.41)*
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0.94(0.71–1.26)
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Marital status
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Not currently married
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1.00
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1.00
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Currently married
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0.76(0.62–0.94)*
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0.80(0.64–1.00)
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Child’s birth order
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2
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1.00
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1.00
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3
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0.86(0.75–0.98)*
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1.00(0.87–1.16)
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4+
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0.57(0.51–0.64)*
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0.99(0.87–1.12)
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Child’s birth interval
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< 24 months
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1.00
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1.00
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24–36 months
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0.93(0.83–1.05)
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1.00(0.88–1.13)
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> 36 months
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1.03(0.92–1.16)
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1.00(0.88–1.14)
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Survival status of preceding birth
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Dead
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0.65(0.57–0.74)*
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0.96(0.83–1.11)
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0.69(0.60–0.78)*
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0.95(0.83–1.11)
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Alive
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1.00
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1.00
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1.00
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1.00
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Model parameters
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Log likelihood
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− 9750.86
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− 8119.01
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− 9647.72
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− 8116.12
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p value (Wald statistic)
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< 0.001
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< 0.001
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< 0.001
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< 0.001
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