Variables | No | Current asthma | No | Controls | P values |
---|---|---|---|---|---|
Overall number of subjects | 744 | 847 | |||
FEV1% predicted | 707 | 90.6 ± 17.6 | 816 | 101.0 ± 12.9 | <0.001 |
FEV1% predicted below 80% | 707 | 164 (23.2) | 816 | 43 (5.3) | <0.001 |
Positive reversibility after a bronchodilator | 444 | 110 (24.8) | 465 | 16 (3.4) | <0.001 |
FEV1/FVC ratio < 0.7 | 705 | 96 (13.6) | 817 | 33 (4.0) | <0.001 |
FeNO ppb# | 597 | 26.88 ± 24.3 | 676 | 19.03 ± 11.0 | <0.001 |
Reactiveness to PD20 ≤ 1.96 mg** | 275 | 195 (70.9) | 328 | 105 (32.0) | <0.001 |
At least 1 positive SPT | 575 | 413 (71.8) | 577 | 191 (33.1) | <0.001 |
Number of positive SPT in the sensitised subjects | 413 | 191 | |||
1 | 79 (19.1) | 68 (35.6) | <0.001* | ||
2 | 63 (15.3) | 54 (28.3) | |||
3 | 75 (18.2) | 29 (15.2) | |||
≥4 | 196 (47.4) | 40 (20.9) | |||
Doctor's office visits | 740 | 263 (35.3) | 844 | 80 (9.5) | <0.001 |
Hospitalisations | 735 | 16 (2.2) | 844 | 1 (0.1) | <0.001 |
Emergency visits due to respiratory problems | 733 | 78 (10.6) | 842 | 11 (1.3) | <0.001 |