Table 1.
Characteristics of study participants (n = 2,428)
| Age (y, mean ± SD) | 59.2 ± 11.7 |
|---|---|
| Female (n, %) | 1,242 (51.2) |
| Body-mass index (kg/m2, mean ± SD) | 28.4 ± 5.4 |
| Occupation category (n, %) | |
| Laborer | 193 (8.0) |
| Sales/clerical | 616 (25.4) |
| Professional/executive/supervisory/technical | 1000 (41.2) |
| Other | 619 (25.5) |
| Educational attainment (n, %) | |
| High school or less | 521 (21.5) |
| Some college | 769 (31.7) |
| College/grad school | 1,135 (46.8) |
| Median value of owner-occupied housing unit ($, median, IQR) | 198,600 (90,400) |
| Offspring cohort (n, %) | 1,133 (46.7) |
| Smoking status (n, %) | |
| Never | 1,170 (48.5) |
| Former | 1,062 (44.0) |
| Current | 181 (7.5) |
| Pack-years of smoking (median, IQR) | |
| Entire sample | 0 ± 15.0 |
| Former smokers | 12.0 ± 21.0 |
| Current smokers | 32.9 ± 15.6 |
| Second-hand smoke exposure (n, %) | 624 (25.9) |
| CT pulmonary vascular measures | |
| TBV (mL, mean ± SD) | 143.1 ± 30.9 |
| BV5 (mL, mean ± SD) | 55.9 ± 11.6 |
| BV5/TBV (%, mean ± SD) | 39.3 ± 4.1 |
| BV10 (mL, mean ± SD) | 81.8 ± 15.9 |
| BV10/TBV (%, mean ± SD) | 57.6 ± 3.8 |
CT indicates computed tomography; IQR, interquartile range.