Table 1 |
||||||||
| Demographic characteristics from 2001 to 2008 (weighted data) | ||||||||
| 2001 n = 18,361 | 2002 n = 18,212 | 2003 n = 19,086 | 2004 n = 18,342 | 2005 n = 19,344 | 2006 n = 18,031 | 2007 n = 14,730 | 2008 n = 18,627 | |
| Education level (%) | ||||||||
| Low | 44.4 | 44.5 | 44.4 | 44.5 | 44.4 | 44.5 | 44.5 | 44.5 |
| Moderate | 33.6 | 33.6 | 33.6 | 33.6 | 33.6 | 33.6 | 33.6 | 33.6 |
| High | 22.0 | 22.0 | 22.0 | 21.9 | 21.9 | 21.9 | 21.9 | 21.9 |
| Income level (%) | ||||||||
| Low | 43.6 | 38.4 | 34.8 | 35.7 | 36.0 | 35.7 | 36.2 | 34.6 |
| Moderate | 34.8 | 37.1 | 34.2 | 35.1 | 34.7 | 37.3 | 35.5 | 36.3 |
| High | 21.5 | 24.6 | 31.0 | 29.2 | 29.2 | 27.0 | 28.3 | 29.2 |
| Gender (%) | ||||||||
| Men | 49.1 | 49.1 | 49.1 | 49.2 | 49.1 | 49.1 | 49.1 | 49.0 |
| Women | 50.9 | 50.9 | 50.9 | 50.8 | 50.9 | 50.9 | 50.9 | 51.0 |
| Age group (%) | ||||||||
| 15–24 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 |
| 25–39 | 29.9 | 30.3 | 30.3 | 30.6 | 30.3 | 30.3 | 30.7 | 30.8 |
| 40–54 | 26.9 | 26.5 | 26.5 | 26.3 | 26.4 | 26.5 | 26.1 | 26.0 |
| 55 and older | 28.4 | 28.6 | 28.5 | 28.4 | 28.6 | 28.5 | 28.5 | 28.6 |
Nagelhout et al. BMC Public Health 2012 12:303 doi:10.1186/1471-2458-12-303
