Table 6 |
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|
Geographic variation in physical activity and the built environment |
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|
ZIP code |
Census tract |
Census block group |
|
|
ICC (95% CI) |
ICC (95% CI) |
ICC (95% CI) |
|
|
|
|||
|
Walking for exercise |
|||
|
|
|||
|
Some versus none |
0.003 (0.000, 0.025) |
0.000 (0.000, 0.051) |
0.000 (0.000, 0.102) |
|
Minutes per weekab |
0.000 (0.000, 0.036) |
0.046 (0.000, 0.129) |
0.055 (0.000, 0.211) |
|
|
|||
|
Built environment characteristics |
|||
|
|
|||
|
Residential density of 1-km buffera |
0.739 (0.680, 0.799) |
0.920 (0.907, 0.932) |
0.953 (0.946, 0.960) |
|
Connectivity of 1-km buffera |
0.784 (0.731, 0.836) |
0.879 (0.861, 0.897) |
0.931 (0.920, 0.941) |
|
Park area within 1-km buffera |
0.330 (0.255, 0.405) |
0.601 (0.554, 0.648) |
0.778 (0.746, 0.809) |
|
|
|||
|
Notes: ICC indicates intra-class correlation coefficient; CI indicates confidence interval; except where otherwise indicated N = 1,608 a Log-transformed to approximate normality b Among participants reporting some walking for exercise: N = 1,000 |
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|
Lovasi et al. International Journal of Health Geographics 2008 7:10 doi:10.1186/1476-072X-7-10 |
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