. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: Obesity (Silver Spring). 2010 May 20;19(1):171–178. doi: 10.1038/oby.2010.117

Table 3.

Anthropometric measures at three-years postpartum, by average daily sleep duration from 6 months to 1 year postpartum.

		Average Daily Sleep Duration (hours/day), 6 Months to 1 Year Postpartum
	N	≤ 5 hours	> 5 hours
		*Effect Estimate (95% Confidence Interval)*
Body mass index (kg/m²)	574
Model 1. Unadjusted		1.02 (−0.49, 2.53)	0.00 (ref)
Model 2. Multivariable Adjusted^†		0.42 (−0.45, 1.30)	0.00 (ref)
Model 3. Model 2 + Postpartum Variables		0.66 (−0.25, 1.57)	0.00 (ref)
Postpartum weight retention at 3 years (kg)	560
Model 1. Unadjusted		1.27 (0.08, 2.61)	0.00 (ref)
Model 2. Multivariable Adjusted^†		1.50 (0.15, 2.84)	0.00 (ref)
Model 3. Model 2 + Postpartum Variables		1.44 (0.02, 2.86)	0.00 (ref)
Subscapular + Triceps Skinfold Thickness (mm)	577
Model 1. Unadjusted		4.76 (1.02, 8.49)	0.00 (ref)
Model 2. Multivariable Adjusted^†		3.94 (1.27, 6.60)	0.00 (ref)
Model 3. Model 2 + Postpartum Variables		4.81 (2.00, 7.62)	0.00 (ref)
Waist circumference (cm)	579
Model 1. Unadjusted		4.29 (1.27, 7.31)	0.00 (ref)
Model 2. Multivariable Adjusted^†		3.10 (1.25, 4.94)	0.00 (ref)
Model 3. Model 2 + Postpartum Variables		3.48 (1.55, 5.42)	0.00 (ref)

^†

Model 2 is adjusted for maternal age, race/ethnicity, education, parity, pre-pregnancy BMI and excessive gestational weight gain. Model 3 is additionally adjusted for postpartum variables including postpartum depression, breastfeeding duration, diet, physical activity, and TV viewing.