Table 3

Probit results and marginal effects for Models 1 and 2

Model 1
 Model 2


All (age 40 – 79)
 High Risk (age 50 – 69)
 Non High Risk (age 40 – 49)
 Non High Risk (age 70 – 79)


Coefficient
 Marginal effect
 Coefficient
 Marginal effect
 Coefficient
 Marginal effect
 Coefficient
 Marginal effect

Dummy age 40–49
 -1.010 *
 -0.373 #
 -
 -
 -
 -
 -
 -
Dummy age 70–79
 -0.473 *
 -0.161 #
 -
 -
 -
 -
 -
 -
Income ($'00/wk)
 0.248 *
 0.021 #
 0.350 *
 0.023 #
 0.398 *
 0.013 #
 1.517
 0.118
Income squared
 -0.027 *
-0.048 *
-0.040 *
-0.288
Non Australian born
 -0.174 *
 -0.054 #
 -0.286 *
 -0.091 #
 -0.079
 -0.031 #
 0.021
 -0.008
Aboriginal
 -0.196
 -0.123 #
 -0.234
 -0.177
 -0.145
 -0.085
 -0.207
 -0.091
Constant
 0.265 *
 -
 0.213
 -
 -1.171 *
 -
 -1.713

Log L
 -6,980.4
 -3,059.1
 -2,514.5
 -1,389.5
Observations
 11,308
 5,482
 3,785
 2,041
Pseudo R2
 0.091
 0.014
 0.005
 0.0073

Notes:

* Coefficient significant at the 5% levelM

# Marginal effect sigificant at the 5% level

Birch et al. Australia and New Zealand Health Policy 2007 4:12   doi:10.1186/1743-8462-4-12