Table 1.
Characteristics of study participants
| Complete study population | Healthy never-smoker subset | |
|---|---|---|
| Participants, n | 3110 | 696 |
| HAA (%) | 5.01 ± 2.38 | 4.76 ± 1.76 |
| Age (years) | 69 ± 9 | 69 ± 9 |
| Sex | ||
| Male | 1489 (47.9%) | 270 (38.8%) |
| Female | 1621 (52.1%) | 426 (61.2%) |
| Race/ethnicity | ||
| Black | 839 (27.0%) | 161 (23.1%) |
| White | 1202 (38.6%) | 228 (32.8%) |
| Hispanic | 658 (21.2%) | 125 (18.0%) |
| Chinese | 411 (13.2%) | 182 (26.1%) |
| Weight (kg) | 78.3 ± 17.5 | 70.3 ± 13.8 |
| Height (cm) | 165.4 ± 9.9 | 163.4 ± 9.4 |
| Smoking history | ||
| Never-smokers | 1417 (45.6%) | 696 (100%) |
| Former smokers | 1459 (46.9%) | 0 (0%) |
| Current smokers | 234 (7.5%) | 0 (0%) |
| Cigarette | 20 ± 25 | 0 ± 0 |
| pack-years† | ||
| Lung function | ||
| FVC (percent predicted) | 97.1 ± 17.8 | 102.1 ± 14.7 |
| FEV1 (percent predicted) | 94.9 ± 19.9 | 103.4 ± 15.1 |
| FEV1/FVC ratio | 74.0 ± 9.0 | 76.8 ± 6.0 |
Data are presented as mean ± SD or n (%). All variables were measured at MESA 10-year follow-up examinations during the years 2010–2012.
†
Among current and former smokers.
FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; HAA, high attenuation area; MESA, Multi-Ethnic Study of Atherosclerosis.