Table 2.

Age-related decline in global cognition and gait speed as a function of CR proxies.

	Education years	Blocks walked per day	Physical activity days per week	Living with someone	Paid or volunteer work
	β (95% CI) p-value	β (95% CI) p-value	β (95% CI) p-value	β (95% CI) p-value	β (95% CI) p-value
Global Cognition
CR Proxy x Age (interaction)	0.002 (0.001, 0.004) 0.001	0.001 (0.001, 0.001) <0.001	0.004 (0.002, 0.006) <0.001	0.012 (0.004, 0.020)) 0.005	0.009 (0.001, 0.017) 0.024
Gait Speed
CR Proxy x Age (interaction)	0.001(−0.001, 0.003) 0.279	−0.000 (−0.001, 0.000) 0.614	−0.000 (−0.003, 0.002) 0.823	−0.006 (−0.017, 0.004), 0.248	0.003 (−0.007, 0.013) 0.510