| Offspring | Third generation | Total | |||
---|---|---|---|---|---|---|
(n = 1247) | (n = 3538) | (n = 4785) | ||||
 | Less likely dust exposure | Highly likely dust exposure | Less likely dust exposure | Highly likely dust exposure | Less likely dust exposure | Highly likely dust exposure |
 | (n = 1126) | (n = 121) | (n = 3112) | (n = 426) | (n = 4238) | (n = 547) |
Male, n (%) | 444 (39.43) | 100 (82.64) | 1298 (41.71) | 378 (88.73) | 1742 (41.10) | 478 (87.39) |
FEV1, L ± SD | 2.71 ± 0.78 | 3.09 ± 0.75 | 3.54 ± 0.78 | 4.02 ± 0.71 | 3.32 ± 0.86 | 3.81 ± 0.82 |
FEV1/FVC, % ± SD | 0.73 ± 0.07 | 0.72 ± 0.08 | 0.78 ± 0.06 | 0.77 ± 0.06 | 0.77 ± 0.07 | 0.76 ± 0.07 |
FEV1/FVC < 70%, n (%) | 337 (29.93) | 43 (35.54) | 318 (10.22) | 49 (11.50) | 655 (15.46) | 92 (16.82) |
Age, years ± SD | 62.83 ± 8.02 | 60.48 ± 7.87 | 39.81 ± 8.58 | 41.03 ± 8.57 | 45.93 ± 13.21 | 45.33 ± 11.66 |
Height, inches ± SD | 65.81 ± 3.76 | 67.99 ± 3.46 | 66.90 ± 3.65 | 69.29 ± 2.98 | 66.61 ± 3.71 | 69.01 ± 3.14 |
Pack-years* ± SD | 21.40 ± 21.58 | 30.73 ± 23.32 | 12.56 ± 13.61 | 19.12 ± 15.90 | 15.50 ± 17.19 | 22.07 ± 18.74 |
Smoking status, n (%) | ||||||
Never smokers | 501 (44.49) | 36 (29.75) | 1854 (59.58) | 177 (41.55) | 2355 (55.57) | 213 (38.94) |
Former smokers | 522 (46.36) | 58 (47.93) | 789 (25.35) | 115 (27.00) | 1311 (30.93) | 173 (31.63) |
Current smokers | 103 (9.15) | 27 (22.31) | 469 (15.07) | 134 (31.46) | 572 (13.50) | 161 (29.43) |