Baseline characteristics according to total leisure time physical activity level, NHIS, 1997–2008
| Overall | Leisure time PA level, minutes/week | ||||||||
| 0 | 10–59 | 60–149 | 150–299 | 300–449 | 450–799 | 800–1499 | ≥1500 | ||
| N | 88 140 | 36 702 | 3695 | 11 739 | 11 580 | 8280 | 8446 | 5198 | 2500 |
| Age, yrs, % | |||||||||
| 40–59 | 78.5 | 74.3 | 81.4 | 79.6 | 81.3 | 81.9 | 84.0 | 79.9 | 80.5 |
| ≥60 | 21.5 | 25.7 | 18.6 | 20.4 | 18.7 | 18.1 | 16.0 | 20.1 | 19.5 |
| Sex, % | |||||||||
| Men | 48.6 | 48.5 | 39.9 | 42.6 | 45.8 | 49.3 | 53.0 | 57.9 | 66.2 |
| Women | 51.4 | 51.5 | 60.1 | 57.4 | 54.2 | 50.7 | 47.0 | 42.1 | 33.8 |
| Race/ethnicity, % | |||||||||
| White | 76.9 | 69.8 | 78.6 | 79.9 | 81.9 | 81.3 | 84.2 | 82.7 | 80.7 |
| Black | 8.6 | 11.2 | 8.6 | 7.3 | 6.6 | 6.9 | 6.3 | 6.6 | 7.6 |
| Hispanic | 10.0 | 14.0 | 8.0 | 8.1 | 7.5 | 7.7 | 6.0 | 7.2 | 8.2 |
| Other | 4.4 | 5.0 | 4.8 | 4.7 | 3.9 | 4.1 | 3.5 | 3.5 | 3.4 |
| Education, % | |||||||||
| <High school | 14.1 | 22.8 | 11.6 | 9.8 | 8.1 | 7.2 | 5.7 | 8.2 | 12.9 |
| High school | 30.0 | 35.9 | 28.7 | 28.8 | 25.8 | 23.9 | 21.0 | 24.7 | 29.3 |
| >High school | 56.2 | 41.3 | 59.6 | 61.4 | 66.1 | 68.9 | 73.3 | 67.1 | 57.8 |
| Marital status, % | |||||||||
| Married | 68.9 | 65.1 | 70.7 | 71.6 | 71.6 | 71.6 | 72.2 | 70.6 | 69.1 |
| Divorced/separated/widowed | 19.8 | 22.7 | 18.2 | 18.3 | 18.0 | 17.6 | 16.8 | 18.1 | 18.8 |
| Never married | 11.3 | 12.2 | 11.0 | 10.1 | 10.4 | 10.9 | 11.0 | 11.3 | 12.1 |
| Body mass index, kg/m2, % | |||||||||
| <18.5 | 1.5 | 2.0 | 1.6 | 1.3 | 1.1 | 1.1 | 1.1 | 0.9 | 1.5 |
| 18.5–24.9 | 41.0 | 38.1 | 37.7 | 39.5 | 42.6 | 44.9 | 46.4 | 45.7 | 41.7 |
| 25.0–29.9 | 38.7 | 38.0 | 37.6 | 39.5 | 38.9 | 39.4 | 38.6 | 39.0 | 42.1 |
| ≥30.0 | 18.8 | 21.8 | 23.1 | 19.7 | 17.5 | 14.7 | 13.9 | 14.3 | 14.7 |
| Smoking, % | |||||||||
| Never | 52.5 | 51.0 | 53.2 | 54.4 | 55.2 | 53.9 | 54.6 | 49.6 | 45.9 |
| Former | 24.9 | 20.9 | 25.2 | 25.7 | 26.4 | 28.8 | 29.8 | 29.9 | 26.8 |
| Current | 22.6 | 28.2 | 21.6 | 20.0 | 18.5 | 17.3 | 15.6 | 20.5 | 27.4 |
| Drinking, % | |||||||||
| Lifetime abstainer | 19.6 | 28.5 | 16.1 | 16.6 | 14.6 | 12.9 | 10.8 | 12.1 | 12.0 |
| Former drinker | 15.6 | 18.5 | 16.4 | 14.7 | 13.5 | 13.8 | 11.9 | 13.1 | 14.3 |
| Light to moderate | 59.8 | 48.2 | 62.7 | 64.2 | 67.2 | 68.6 | 71.5 | 68.6 | 66.4 |
| Heavy | 5.0 | 4.8 | 4.7 | 4.6 | 4.7 | 4.7 | 5.7 | 6.3 | 7.3 |