. Author manuscript; available in PMC: 2013 May 19.

Published in final edited form as: J Expo Sci Environ Epidemiol. 2012 Jun 6;22(5):10.1038/jes.2012.53. doi: 10.1038/jes.2012.53

Table 2.

Mean and SD of the tract-specific intercepts α₀(s) and slopes α₁(s) relating ambient concentrations and personal exposures.

	Exponentiated intercepts α₀(s)		Slopes α₁(s)
	Mean across tracts	SD across tracts	Mean across tracts	SD across tracts
Spring	0.560 (0.557, 0.564)	0.014 (0.011, 0.017)	0.977 (0.975, 0.980)	0.010 (0.008, 0.013)
Summer	0.613 (0.610, 0.615)	0.016 (0.014, 0.019)	0.989 (0.988, 0.990)	0.006 (0.004, 0.008)
Fall	0.492 (0.491, 0.493)	0.031 (0.029, 0.032)	0.956 (0.955, 0.958)	0.018 (0.016, 0.020)
Winter	0.569 (0.566, 0.573)	0.021 (0.019, 0.024)	0.984 (0.982, 0.987)	0.008 (0.006, 0.011)

The summary statistics were calculated across 2105 census tracts. Posterior means and 95% posterior intervals are presented.