Table 3.
Descriptive characteristics of sample, 1997-2009 National Health Interview Survey.
| Characteristic | Percentage (unless noted otherwise) |
|---|---|
| Age (mean, years) | 56.2 |
| Male | 44.4 |
| Black | 14.0 |
| Low education | 50.7 |
| Obese (body mass index≥30 kg/m2) | 26.7 |
| Current smoker | 21.1 |
| Number | |
| Sample size | 202,567 |
| Person-years | 1,646,097 |
| Deaths | 28,388 |
Note: Ages 40-84 at time of survey. Death linkages are through December 31, 2011. Age is age over follow-up. Other characteristics pertain to time at survey. Low education defined as having a HS degree or GED.