Table 1.
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