Table 4.

Relationship of total daily physical activity with incident disability*

	Incident disability
	Hazard ratio (95% Confidence interval)
Variable	Model A	Model B
Total daily physical activity	0.75 (0.66, 0.84)	0.77 (0.68, 0.87)
Self-report physical activity		0.94 (0.88, 0.99)

*From discrete time proportional hazard models adjusted for age, sex, and education where incident disability is measured as years to first report of not being independent in at least one basic activity of daily living.