METHODOLOGY
Sample
Conducted nationally among 1202 respondents aged 18 years and over.
Respondents were selected by means of a stratified random sample process which included:
- a quota set for each capital city and non-capital city area. Within each of these areas a quota set for each telephone area code;
- random selection of household telephone numbers drawn from current telephone listings for each area code;
- random selection of an individual in each household by a "last birthday" screening question.
Interviewing
Conducted by telephone over the period of 29 June - 1 July 2007 by fully trained and personally briefed interviewers.
To ensure the sample included those people who tend to spend a lot of time away from home, a system of call backs and appointments was incorporated.
Weighting
To reflect the population distribution, results were post-weighted to Australian Bureau of Statistics data on age, highest level of schooling completed, sex and area.