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Table 5 Results for the regression of dummy variables indicating income decile against total drug costs

From: On the validity of area-based income measures to proxy household income

Explanatory Variables Household income Neighborhood Income Household income (without covariates) Neighborhood Income (without covariates)
Income decile 1 -169.00 (-30.27) -59.162 (-10.57) -68.22 (-9.87) -14.57 (-2.65)
Income decile 2 -297.08 (-53.20) -128.26 (-22.92) -405.50 (-58.67) -96.59 (-17.61)
Income decile 3 -305.05 (-54.63) -91.67 (-16.38) -289.43 (-41.87) -80.34 (-14.65)
Income decile 4 -232.39 (-41.62) -85.20 (-15.22) -179.73 (-26.00) -72.91 (-13.29)
Income decile 5 -378.51 (-67.78) -77.08 (-13.77) -41.74 (-6.04) -67.03 (-12.22)
Income decile 6 -257.56 (-46.13) -74.33 (-13.28) -40.48 (-5.85) -54.49 (-9.94)
Income decile 7 -207.80 (-37.21) -64.83 (-11.58) -34.68 (-5.02) -44.99 (-8.21)
Income decile 8 -89.99 (-16.12) -62.60 (-11.18) -53.00 (7.67) -39.09 (-7.13)
Income decile 9 -32.60 (-5.84) -57.38 (-10.25) -14.63 (-2.12) -34.05 (-6.21)
Presence of seniors 787.81 (250.77) 790.37 (267.87) Not included Not included
Household size 105.43 (89.26) 104.65 (92.14) Not included Not included
Adjusted R2 0.101 0.06 0.01 0.01
  1. Note: T statistics are in parentheses. All coefficients are significant at 95% confidence interval.