| Women | Men | |||||
| No | Mean | SD | No | Mean | SD | |
| FEV1 (l) | 435 | 3.34 | 0.46 | 486 | 4.43 | 0.64 |
| FVC (l) | 435 | 4.19 | 0.57 | 486 | 5.79 | 0.78 |
| FEV1/FVC (%) | 435 | 79.8 | 6.19 | 486 | 76.7 | 6.83 |
| TLC (l) | 419 | 5.59 | 0.73 | 465 | 7.50 | 0.96 |
| FRC (l) | 419 | 2.81 | 0.61 | 466 | 3.46 | 0.78 |
| RV (l) | 419 | 1.37 | 0.33 | 465 | 1.65 | 0.42 |
| Tlco (ml/min/mm Hg) | 422 | 24.1 | 3.74 | 473 | 34.3 | 5.71 |
| Tlco/Va (ml/min/mm Hg/l) | 422 | 4.66 | 0.69 | 473 | 4.84 | 0.76 |
| Va (l) | 422 | 5.21 | 0.71 | 473 | 7.14 | 0.95 |
Pregnant women were excluded.
FEV1, forced expiratory volume in 1 s; FRC, functional residual capacity; FVC, forced vital capacity; RV, residual volume; TLC, total lung capacity; Tlco, single breath diffusing capacity for carbon monoxide; Va, alveolar volume.