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. 2012 Jun 13;9(6):2204–2225. doi: 10.3390/ijerph9062204

Table 3.

Multilevel Models of SED & HAP Exposure Hazard After Adjustment for County Population Size and Economic Activity and Tract Population Density: Respiratory, Neurological, and Cancer Exposure Hazards, 2005.

HAP Exposure Hazards Respiratory Neurological Cancer
Tract Population Density (Log 10 Density/Sq M) 0.385 *** 0.0121 *** 5.797 ***
−0.00538 −0.00057 −0.0687
Townsend Index-Tract 0.0905 *** 0.00312 *** 1.185 ***
−0.00138 −0.000146 −0.0176
County Population (2000) Log 10 0.247 *** 0.00353 5.947 ***
−0.031 −0.00334 −0.297
Annual Wage per Employee in Tract’s County ’05 0.0170 *** 0.000331 0.308 ***
−0.0026 −0.00028 −0.0247
Cross-level Tract SED & County Population Size 0.0138 *** −2.94 × 10−6 0.510 ***
−0.00079 −8.41 × 10−5 −0.0102
New England Region 0.357 *** −0.00992 1.792 *
−0.11 −0.0118 −0.983
Mid-Atlantic Region −0.0684 0.00163 3.617 ***
−0.0823 −0.00887 −0.746
East North Central −0.207 *** 0.0132 * 3.057 ***
−0.0633 −0.00682 −0.59
West North Central −0.0189 0.000438 4.110 ***
−0.0609 −0.00655 −0.58
South Atlantic 0.567 *** −0.00275 10.68 ***
−0.0607 −0.00653 −0.57
East South Central 0.166 ** 0.0217 *** 12.37 ***
−0.0657 −0.00707 −0.618
West South Central −0.0179 −0.00828 8.470 ***
−0.063 −0.00678 −0.595
Pacific Region 0.854 *** −0.00184 4.812 ***
−0.0812 −0.00874 −0.749
Constant −1.372 *** −0.00616 −21.31 ***
West Region-Intercept −0.127 −0.0136 −1.21
Model Fit Statistics:
ll_0 −85,224 67,237 −252,964
ll −76,808 68,045 −240,725
df_m 13 13 13
Number Counties 3,119 3,119 3,119
rho 0.485 0.494 0.294
sigma_e 0.755 0.08 9.706
sigma_u 0.733 0.0791 6.27
chi2_c 67,085 21,898 42,053
ll_c −110,351 57,096 −261,752
chi2 16,831 1,616 24,477

Standard errors below coefficients; coefficients *** p < 0.01, ** p < 0.05, * p < 0.1.