Table 1.

Variables and definitions used in the study

Variable	Definition
Screening mammography	At least one mammogram obtained for screening purposes (ie not diagnostic) in the last 2 years
Target-age women	Women aged 50–69 years (the target age range for the BreastScreen program)
Non target-age women (young)	Women aged 40–49 years
Non target-age women (older)	Women aged 70–79 years
Income	Average personal income per week ('00)
Income squared	Average personal income per week squared
Australian-born	Women who were born in Australia
Aboriginal (ATSI)	Women who identify as being of Aboriginal or Torres Strait descent