Table 5

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

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


Note: T statistics are in parentheses. All coefficients are significant at 95% confidence interval.

Hanley and Morgan BMC Health Services Research 2008 8:79   doi:10.1186/1472-6963-8-79

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