Table 2.

Estimated associations between transport walking and built environment exposures within specific ring-shaped areas and buffer areas, based on longitudinal data from MESA, 2000–2010.

N = 3913	Outcome: transport walking minutes per week
	Ring-shaped areas (Rm - Rk)				Buffer areas (0 - Rk)
Exposure	buffer ranges (km): Rm - Rk	$Exp (10 * \bar{β} (r_{m}; r_{k}))$	95% C.I.		buffer ranges (km): 0 - Rk	$Exp (10 * \bar{β} (0; r_{k}))$	95% C.I.
1. Walkable destinations	0 – 0.5	0.030	0.008	0.053	0 – 0.5	0.030	0.008	0.053
	0.5 – 1	0.022	0.008	0.036	0 – 1	0.053	0.016	0.091
	1 – 1.5	0.015	0.006	0.023	0 – 1.5	0.068	0.022	0.117
	1.5 – 2	0.008	0.002	0.015	0 – 2	0.077	0.024	0.133
	2 – 3	0.007	−0.005	0.018	0 – 3	0.084	0.019	0.154
	3 – 4	0.006	−0.004	0.016	0 – 4	0.091	0.015	0.172
	4 – 5	0.008	−0.006	0.021	0 – 5	0.099	0.010	0.197
1.1. Frequent social destinations	0 – 0.5	0.158	0.057	0.269	0 – 0.5	0.158	0.057	0.269
	0.5 – 1	0.101	0.047	0.157	0 – 1	0.275	0.107	0.469
	1 – 1.5	0.053	0.018	0.088	0 – 1.5	0.342	0.127	0.598
	1.5 – 2	0.018	−0.009	0.047	0 – 2	0.367	0.117	0.672
	2 – 3	0.008	−0.038	0.055	0 – 3	0.377	0.075	0.765
	3 – 4	0.039	−0.005	0.084	0 – 4	0.430	0.069	0.914
	4 – 5	0.025	−0.026	0.079	0 – 5	0.466	0.041	1.065
1.2. Food stores	0 – 0.5	0.025	−0.035	0.089	0 – 0.5	0.025	−0.035	0.089
	0.5 – 1	0.023	−0.027	0.076	0 – 1	0.049	−0.061	0.173
	1 – 1.5	0.022	−0.019	0.063	0 – 1.5	0.072	−0.078	0.247
	1.5 – 2	0.020	−0.010	0.051	0 – 2	0.093	−0.088	0.310
	2 – 3	0.034	0.001	0.069	0 – 3	0.131	−0.087	0.401
	3 – 4	0.027	−0.001	0.056	0 – 4	0.161	−0.088	0.479
	4 – 5	0.018	−0.035	0.074	0 – 5	0.182	−0.120	0.589

Note: the coefficient 0.022 means a 2.2% change (over the 10 years of follow-up) in walking minutes per week for an additional 10 destinations within a 0.5 to 1 kilometer distance from the residence. Each model adjusts covariates: age, gender, race, education, per capita income, BMI, self; rated health, arthritis last 2 weeks, car ownership, marital status, employment status, population density in 1-mile residential buffer, street connectivity at 1-mile residential buffer. Bold fonts indicate p < 0.05.