FEV1/FVC (%) | FEV1 (l) | |||||
Age (year) | 43 | 48 | Decline | 43 | 48 | Decline |
Mean | 80.2 | 79.2 | 1.0 | 3.486 | 3.350 | 0.135 |
Range | 73.8–84.1 | 72.4–83.5 | 0.4–1.6 | 3.10–3.82 | 2.95–3.66 | 0.11–0.16 |
Mean1 | 84.5 | 79.3 | 5.2 | 3.532 | 3.335 | 0.197 |
SD1 | 9.8 | 8.8 | – | 0.833 | 0.806 | – |
FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity.