Table 3

Mean difference (95% Confidence Interval) of length of stay in hospital from delivery to discharge by maternal BMI categories

Model numbers

N

Maternal BMI categories


Underweight

Normal

Overweight

Obese


Model 1

6528

0.00(-0.13,0.13)

0

0.01(-0.11,0.12)

0.30(0.10,0.49)

Model 2

6528

0.02(-0.10,0.15)

0

0.02(-0.10,0.14)

0.31(0.13,0.51)

Model 3

6528

0.04(-0.09,0.17)

0

-0.03(-0.15,0.09),

0.23(0.04,0.42)

Model 4

6528

0.07(-0.10,0.24)

0

0.00(-0.12,0.11)

0.07(-0.10,0.24)


Model 1: Adjusted for maternal age

Model 2: Adjusted for confounders: - maternal age, education, racial origin, cigarette smoking and alcohol consumption

Model 3: model 2+ adjusted for the mediating effects of complications of pregnancy

Model 4: model 3+ adjusted for the mediating effects of birth weights and method of delivery

Mamun et al. BMC Pregnancy and Childbirth 2011 11:62   doi:10.1186/1471-2393-11-62

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