. Author manuscript; available in PMC: 2011 Aug 1.

Published in final edited form as: Am J Prev Med. 2010 Aug;39(2):140–147. doi: 10.1016/j.amepre.2010.03.025

Table 1.

Association between BMI and activity among black (n=22,948) and white women (n=7,830).^a^,^b

	BMI 25–29 vs <25		BMI 30–39 vs <25		BMI ≥40 vs <25
Sedentary Behavior Time (hours/day) ^c
White Women	OR	95% CI	OR	95% CI	OR	95% CI
Quartile 1 (<5.7)				ref
Quartile 2 (5.8 – 8.3)	1.06	(0.89, 1.25)	1.27	(1.07, 1.50)	1.58	(1.24, 2.03)
Quartile 3 (8.4 – 12.0)	1.02	(0.85, 1.21)	1.44	(1.21, 1.71)	2.26	(1.77, 2.89)
Quartile 4 (>12.0)	1.30	(1.05, 1.61)	2.02	(1.64, 2.48)	4.03	(3.08, 5.28)
Black Women
Quartile 1 (<5.7)				ref
Quartile 2 (5.8–8.3)	1.02	(0.90, 1.15)	1.01	(0.90, 1.14)	1.12	(0.96, 1.29)
Quartile 3 (8.4–12.0)	1.02	(0.90, 1.15)	1.12	(1.00, 1.26)	1.36	(1.18, 1.57)
Quartile 4 (>12.0)	0.99	(0.87, 1.12)	1.19	(1.05, 1.34)	1.56	(1.35, 1.81)
Active Behavior Time (hours/day)^d
White Women
Quartile 1 (<1.0)				ref
Quartile 2 (1.1–2.0)	0.88	(0.73, 1.06)	0.91	(0.76, 1.09)	0.74	(0.58, 0.94)
Quartile 3 (2.1–4.0)	0.91	(0.76, 1.10)	0.84	(0.71, 1.01)	0.79	(0.62, 0.99)
Quartile 4 (> 4.0)	0.84	(0.69, 1.02)	0.70	(0.58, 0.85)	0.65	(0.51, 0.84)
Black Women
Quartile 1 (<1.0)				ref
Quartile 2 (1.1–2.0)	1.00	(0.88, 1.14)	0.93	(0.82, 1.04)	0.96	(0.83, 1.11)
Quartile 3 (2.1–4.0)	1.05	(0.93, 1.18)	0.93	(0.83, 1.05)	0.91	(0.80, 1.05)
Quartile 4 (>4.0)	0.95	(0.84, 1.08)	0.80	(0.71, 0.90)	0.70	(0.60, 0.81)

Participating women were enrolled in enrolled in the Southern Community Cohort Study.

Sedentary behaviors included viewing TV and movies, sitting at work and other sitting.

Active behaviors include light, moderate and vigorous occupational/household activities and exercise and sports.

The association was assessed using ORs and 95% CIs derived from race-stratified polytomous logistic regression models

Models adjusted for age, income, education, current occupational status, cigarette smoking status, marital status, and self-reported comorbidities (including heart attack/coronary artery bypass surgery, stroke, diabetes, hypertension, depression, emphysema, and arthritis). Models for each race group included both moderate/vigorous physical activity time quartiles and sedentary behavior time quartiles.