Table 3.

Relationship between scores on different domains of cognition at baseline and change in walking speed over the follow-up period

Predictor	Modela	Regression coefficient for change in walking speed
		Coefficient	SE	p value
Cognition at baseline, per SD increment
Executive function	1	0.061	0.010	<0.01
Memory	1	0.047	0.010	<0.01
Processing speed	1	0.036	0.010	<0.01
Executive function	2	0.032	0.010	<0.01
Memory	2	0.020	0.010	<0.01
Processing speed	2	0.025	0.011	<0.01
Executive function	3	0.025	0.011	0.023
Memory	3	0.018	0.012	0.115
Processing speed	3	0.017	0.011	0.123

^aModels: 1—adjusted for age, age-squared and sex; 2—further adjusted for education, and household wealth at baseline; 3—further adjusted for self-reported doctor diagnoses of heart disease, stroke, diabetes, hypertension, osteoporosis, arthritis or rheumatism, chronic lung disease, asthma or cancer, physical activity, smoking, and depressive symptoms at baseline, plus BMI, waist-to-hip ratio, grip strength and blood pressure at wave 2