Results of lung function tests in index and control children; results are % predicted for height and sex (SE)
| Index | Controls | p Value | 95% confidence intervals of differences | |
|---|---|---|---|---|
| PEFR | 93.2 (1.6) | 102.0 (1.7) | 0.0003 | 4.1 to 13.4 |
| FVC | 88.9 (1.5) | 92.0 (1.7) | 0.17 | −1.4 to 7.5 |
| FEV0.75 | 88.6 (1.5) | 94.0 (1.6) | 0.01 | 0.99 to 9.8 |
| FEV1.0 | 91.0 (1.5) | 96.1 (1.7) | 0.03 | 0.53 to 9.56 |
| MEF75 | 90.1 (2.0) | 97.6 (2.2) | 0.014 | 1.55 to 13.45 |
| MEF50 | 85.5 (2.5) | 100.4 (3.3) | 0.0004 | 6.75 to 23.1 |
| MEF25 | 85.5 (3.1) | 95.2 (4.0) | 0.048 | 0.078 to 20.04 |
| FRC | 99.2 (3.5) | 102.9 (3.7) | 0.47 | −6.5 to 13.8 |
| TLC | 88.0 (1.8) | 91.6 (1.7) | 0.15 | −1.37 to 8.69 |
| RV | 120.2 (5.6) | 122.2 (6.5) | 0.82 | −15.0 to 18.9 |
| Raw (cmH2O/l/s) | 2.87 (0.12) | 2.35 (0.12) | 0.002 | −0.85 to −0.21 |
| SGaw (cmH2O/l/s) | 0.31 (0.02) | 0.34 (0.02) | 0.13 | −0.01 to 0.081 |
| PC20(g/l) | 5.41 (0.40) | 6.1 (0.44) | 0.25 | −0.49 to 1.86 |
FVC = forced vital capacity; FEV0.75 and1.0 = forced expiratory volume in 0.75 seconds and one second respectively; MEF0.75, 0.5 and 0.25 = maximum expiratory flow at 75, 50, 25% of vital capacity respectively; SGaw = specific conductance; PC20 = concentration of histamine producing a 20% fall in PEFR.