Table 1.
Participant Characteristics the MESA Lung Study, 2000–2006
| mean (SD) or % | p25, median, p75 | |
|---|---|---|
| Personal characteristics | ||
| Male, % | 49.4 | |
| Age, years | 61 (10) | 53, 61, 69 |
| Adult height, cm | 167 (10) | 159, 166, 174 |
| Body mass index | 28 (5) | 24, 27, 31 |
| Black, % | 25.3 | |
| Chinese, % | 16.6 | |
| Hispanic, % | 22.6 | |
| White, % | 35.5 | |
| Born outside of US, % | 36.6 | |
| Health and tobacco exposure history | ||
| Asthma before age 45, % | 8.1 | |
| Hay fever, % | 33.0 | |
| Family history of emphysema, % | 4.7 | |
| Never smoked cigarettes, % | 47.4 | |
| Current cigarette smoker, % | 15.3 | |
| Former cigarette smoker, % | 37.3 | |
| Pack-years for current/former cigarette smokers | 20 (29) | 3, 13, 29 |
| Lived with a smoker, % | 42.9 | |
| Second-hand tobacco exposure at work, % | 39.8 | |
| Occupational dust exposure, % | 36.6 | |
| Socioeconomic characteristics | ||
| Education, estimated years | 14 (4) | 12, 14, 16 |
| Annual household income, $1000s per person | 26 (20) | 11, 22, 38 |
| Employed, % | 52.4 | |
| Unemployed, % | 1.9 | |
| Home maker, % | 10.4 | |
| Retired, % | 35.2 | |
| Car ownership, % | 81.8 | |
| Home ownership, % | 66.1 | |
| Financial investments, % | 62.0 | |
| Real estate investments, % | 26.4 | |
| Wealth index, range 0 to 4 | 2.4 (1.3) | 1, 3, 3 |
| Lung density and lung function | ||
| Percent emphysema | 20 (13) | 9, 18, 29 |
| Percent predicted FEV1 | 94 (18) | 83, 95, 105 |
| Percent predicted FVC | 96 (16) | 85, 95, 106 |
| Percent predicted FEV1/FVC ratio | 98 (11) | 93, 100, 105 |
Notes: FEV1 indicates forced expiratory volume, 1 second; FVC, forced vital capacity; p25, 25th percentile; p75, 75th percentile; N = 3,706