Table 1. Sample Characteristics by Socio-Demographic Groups, NMSS 1995–2009.
| Sample | % | |
| Gender | 5496 | |
| Male | 2430 | 44.2 |
| Female | 3066 | 55.8 |
| Age group | 5496 | |
| 18–24 years | 521 | 9.5 |
| 25–34 years | 1124 | 20.5 |
| 35–44 years | 1565 | 28.5 |
| 45–54 years | 1306 | 23.8 |
| 55–64 years | 980 | 17.8 |
| Highest level of education | 5472 | |
| Less than Year 12 | 1546 | 28.3 |
| Year 12 or equivalent | 1188 | 21.7 |
| Trade/Certificate/Diploma | 940 | 17.2 |
| University | 1798 | 32.9 |
| Household income | 5054 | |
| Up to $60,000 | 2861 | 56.6 |
| Over $60,000 | 2193 | 43.4 |
| Employment status | 5491 | |
| Employed | 3973 | 72.4 |
| Unemployed | 1518 | 27.6 |
| Country of birth | 5495 | |
| Born in Australia | 3724 | 67.8 |
| Born elsewhere | 1771 | 32.2 |