Table 3.
Comparison of spirometric parameters. Mean (SEM).
| n: 75 | Knudson | NHANES III | p |
|---|---|---|---|
| FVC (L) | 4.37 (0.07) | 4.77 (0.05) | < 0.001 |
| FVC (%) | 110.30 (1.82) | 100.20 (1.36) | < 0.001 |
| VEF1 (L) | 3.60 (0.06) | 3.80 (0.05) | < 0.001 |
| VEF1 (%) | 105.20 (1.83) | 99.36 (1.43) | < 0.001 |
| FEF 25–75 (L) | 3.86 (0.07) | 3.63 (0.07) | < 0.001 |
| FEF 25–75 (%) | 90.89 (3.02) | 96.65 (3.15) | < 0.001 |
FVC (L): Forced vital capacity, in liters, FVC (%): percentage reached of forced vital capacity, FEV1 (L) Forced expiratory volume in one second, in liters, FEV1 (%) Percentage reached of forced expiratory volume in one second, FEF 25–75 (L) Forced expiratory flow between 25% and 75%, in liters. FEF 25–75 (%) Percentage reached of forced expiratory flow between 25% and 75%. SEM: Standard error of the mean.