Table 5

Probit results and marginal effects for Model 3

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
Income ($'00/wk)
 0.344 *
 0.015 #
 0.404 *
 0.012
 1.466
 0.104 #
Income squared
 -0.050 *
-0.041 *
-0.282
 -0.007
Non Australian born
 -0.268 *
 -0.069 #
 -0.045
 -0.018
 -0.019
 -0.087
Aboriginal
 -0.200
 -0.131 #
 -0.152
 -0.076
 -0.204
Central Sydney
 -0.233
 -0.059 #
 -0.004
 -0.001
 -0.253
 -0.099
South Eastern Sydney
 -0.271 *
 -0.070 #
 0.026
 0.010
 0.081
 0.030
South Western Sydney
 -0.503 *
 -0.143 #
 -0.170
 -0.066
 -0.208
 -0.081
Wentworth
 -0.412 *
 -0.113 #
 -0.027
 -0.011
 0.066
 0.025
Western Sydney
 -0.291 *
 -0.076 #
 -0.179
 -0.069
 -0.237
 -0.092
Central Coast
 -0.183
 -0.045
 -0.079
 -0.031
 0.029
 0.011
Far West
 -0.305 *
 -0.080 #
 0.074
 0.029
 -0.159
 -0.061
Greater Murray
 -0.234 *
 -0.059 #
 -0.048
 -0.019
 -0.297
 -0.116 #
Macquarie
 -0.543 *
 -0.157 #
 -0.194
 -0.075
 -0.239
 -0.093
Mid North Coast
 -0.227 *
 -0.057 #
 0.170
 0.067
 -0.147
 -0.057
Mid Western
 -0.658 *
 -0.197 #
 -0.108
 -0.042
 -0.423 *
 -0.166 #
New England
 -0.239 *
 -0.057 #
 -0.299 *
 -0.012
 -0.058
 -0.101
Northern Rivers
 -0.225 *
 -0.061 #
 -0.030
 -0.113 #
 -0.259
 -0.022
Southern
 -0.254 *
 -0.065 #
 -0.269 *
 -0.103 #
 -0.349 *
 -0.137 #
Hunter
 -0.086
 -0.020
 0.354 *
 0.140 #
 0.061
 0.023
Illawarra
 -0.334 *
 -0.088 #
 -0.173
 -0.067
 -0.424 *
 -0.167 #
Constant
 0.500 *
-1.148 *
-1.510
Log L
 -3022.030
 -2484.780
 -1372.700
Observations
 5482
 3785
 2041
Pseudo R2
 0.026
 0.017
 0.019

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