. Author manuscript; available in PMC: 2015 Mar 1.

Published in final edited form as: Int J Obes (Lond). 2014 Jan 24;38(9):1159–1164. doi: 10.1038/ijo.2014.13

Table 2.

Odds Ratios for Association between Obesity and Daytime Napping by Nocturnal Sleep Duration.

Daytime Napping (per hr)	Mean Nocturnal Sleep Duration				Interaction p-value
Daytime Napping (per hr)	≤ 5 hrs	>5 to <7 hrs	7 to <8 hrs	≥ 8 hrs	Interaction p-value
MrOS Men	0.99 (0.78-1.25)	1.29 (1.12-1.48)	1.38 (1.09-1.75)	1.22 (0.79-1.87)	0.097
SOF Women	0.98 (0.75-1.27)	1.48 (1.28-1.71)	1.23 (1.03-1.48)	1.23 (0.94-1.62)	0.008

All models adjusted for age, race, site, alcohol, smoking, caffeine, education, history of diabetes, stroke, coronary artery disease, congestive heart failure, use of antidepressants, use of benzodiazepines, exercise, cognitive function, depression, and self-reported health status. p-value is test for interaction across sleep duration categories.