Table 1.
Sample characteristics from NHANES 2005–2006 of adults 20 years of age and older
| n | Percent | |
| Gender | ||
| Male | 2,002 | 48.6 |
| Female | 2,121 | 51.4 |
| Race | ||
| Non-Hispanic White | 2,188 | 53.1 |
| Non-Hispanic Black | 950 | 23.0 |
| Other | 985 | 23.9 |
| Education | ||
| <High school | 1,132 | 27.4 |
| High school | 997 | 24.2 |
| Some college | 1,994 | 48.4 |
| Alcohol consumption | ||
| Abstainer | 1,439 | 34.9 |
| Healthy drinker | 2,168 | 52.6 |
| Heavy/binge drinker | 516 | 12.5 |
| Asthma | ||
| No | 3,583 | 86.9 |
| Yes | 536 | 13.1 |
| Diabetes | ||
| No | 3,699 | 89.8 |
| Yes | 420 | 10.2 |
| Cardiovascular disease | ||
| No | 3,759 | 91.2 |
| Yes | 363 | 8.8 |
| Smoking status | ||
| Nonsmoker without SHS | 861 | 20.9 |
| Nonsmoker with SHS | 2,172 | 52.7 |
| Smoker | 1,090 | 26.4 |
| Sleep disorder diagnosis | ||
| Yes | 279 | 6.8 |
| No | 3,844 | 93.2 |
| Presence of two or more symptoms of sleep disorders | ||
| Yes | 2,007 | 48.7 |
| No | 2,116 | 51.3 |
| M | SE | |
| Age (years) | 48.3 | 0.29 |
| Body mass index | 28.9 | 0.11 |
Note. NHANES = National Health and Nutrition Examination Survey; SHS = secondhand smoke.