TABLE 2—

Adjusted HAQ-DI Scores for Staged Multivariable Analysis of Covariance for Differences Between Physical Activity Groups Within Each Weight Group Among 805 US Seniors: 1989–2002

	Normal Weighta		Overweightb
	Physically Activec (n = 442), Mean (SE)	Physically Inactived (n = 123), Mean (SE)	Physically Activec (n = 153), Mean (SE)	Physically Inactived (n = 87), Mean (SE)
Age only	0.09 (0.01)	0.28** (0.03)	0.16 (0.02)	0.26** (0.02)
Age + gender	0.12 (0.01)	0.28** (0.03)	0.20 (0.02)	0.28** (0.02)
Age + race/ethnicitye	0.09 (0.02)	0.25** (0.03)	0.16 (0.02)	0.25** (0.03)
Age + education	0.09 (0.02)	0.25** (0.03)	0.16 (0.02)	0.25** (0.03)
Age + smoking	0.07 (0.03)	0.24** (0.04)	0.15 (0.03)	0.24** (0.04)
Age + number of comorbid conditions	0.08 (0.03)	0.24** (0.04)	0.15 (0.03)	0.24** (0.04)
Age + baseline HAQ-DI score	0.11 (0.03)	0.22** (0.03)	0.14 (0.03)	0.19* (0.03)

Note. HAQ-DI = Stanford Health Assessment Questionnaire Disability Index. Having a disability was the reference variable.

^aDefined as a body mass index (BMI) of < 25 kg/m².

^bDefined as a BMI of ≥ 25 kg/m².

^cDefined as vigorous exercise for more than 60 minutes per week.

^dDefined as vigorous exercise for 60 minutes or less per week.

^eWhite vs non-White.

* P = .001; **P < .001, between active and inactive categories within weight group.