Table 4.

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

Predictor	Modela	Regression coefficient for change in cognition
		Cognitive domain	Coefficient	SE	p value
Walking speed at baseline, per SD increment	1	Executive function	0.076	0.010	<0.01
	1	Memory	0.065	0.011	<0.01
	1	Processing speed	0.050	0.009	<0.01
	2	Executive function	0.045	0.011	<0.01
	2	Memory	0.041	0.011	<0.01
	2	Processing speed	0.037	0.010	<0.01
	3	Executive function	0.036	0.013	<0.01
	3	Memory	0.031	0.013	0.015
	3	Processing speed	0.025	0.012	0.038

^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