Table 2 Spirometric parameters
Parameter | UED group | LED group | Mean difference (UED-LED) | 95% CI of difference | p-value for difference | |||||
|---|---|---|---|---|---|---|---|---|---|---|
Number | Mean ± SD | Median (25%; 75%) | Number | Mean ± SD | Median (25%; 75%) | Lower | Upper | |||
FEV1%pred | 72 | 124.9 ± 10.3 | 124.6 (116.9; 131.4) | 51 | 85.5 ± 10.9 | 85.1 (77.1; 91.4) | 39.4 | 35.5 | 43.3 | < 0.001 |
FVC %pred | 72 | 127.2 ± 10.9 | 129.8 (119.3; 134.4) | 51 | 101.8 ± 13.0 | 102.0 (95.6; 108.8) | 25.4 | 21.0 | 29.8 | < 0.001 |
FEV1/FVC %pred | 72 | 97.5 ± 6.2 | 97.7 (92.7; 102.3) | 51 | 83.9 ± 10.4 | 84.4 (78.3; 91.0) | 13.6 | 10.4 | 16.9 | < 0.001 |
FEF25–75%pred | 72 | 124.7 ± 34.8 | 120.4 (99.3; 148.8) | 49 | 56.1 ± 23.6 | 49.2 (39.5; 65.0) | 69.8 | 59.3 | 80.2 | < 0.001 |
FEF75%pred | 72 | 168.0 ± 66.3 | 159.7 (118.3; 204.9) | 49 | 74.1 ± 39.5 | 65.5 (49.2; 86.8) | 93.9 | 74.8 | 113.0 | < 0.001 |
FEV1 z-score | 72 | 1.465 ± 0.587 | 1.433 (0.991; 1.862) | 51 | −0.819 ± 0.610 | −0.847 (−1.288; −0.527) | 2.284 | 2.068 | 2.500 | < 0.001 |
FVC z-score | 72 | 1.514 ± 0.579 | 1.629 (1.124; 1.889) | 51 | 0.101 ± 0.728 | 0.112 (− 0.270; 0.524) | 1.413 | 1.180 | 1.647 | < 0.001 |
FEV1/FVC z-score | 72 | −0.221 ± 0.579 | −0.200 (− 0.654; 0.230) | 51 | −1.389 ± 0.857 | −1.349 (− 1.953; − 0.798) | 1.168 | 0.911 | 1.424 | < 0.001 |
FEF25–75 z-score | 72 | 0.479 ± 0.702 | 0.451 (− 0.014; 0.990) | 49 | − 1.229 ± 0.721 | −1.343 (− 1.721; − 0.955) | 1.709 | 1.448 | 1.969 | < 0.001 |
FEF75 z-score | 72 | 0.697 ± 0.614 | 0.752 (0.274; 1.108) | 49 | − 0.658 ± 0.750 | −0.659 (− 1.147; − 0.241) | 1.355 | 1.109 | 1.602 | < 0.001 |
FEV1/FVC | 72 | 0.749 ± 0.048 | 0.752 (0.713; 0.785) | 51 | 0.642 ± 0.079 | 0.652 (0.595; 0.697) | 0.107 | 0.082 | 0.132 | < 0.001 |