Table.
Distribution of asthma and lung function in participants aged 42 according to severity of asthma at age 7 or 10
| Symptoms age 7
|
No (%) at age 42
|
Lung function at age 42
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| No recent asthma (n=199)
|
Infrequent asthma (n=58)
|
Frequent asthma (n=76)
|
Persistent asthma (n=70)
|
Total (n=403)
|
No measured (n=267)
|
FEV1/FVC (95% CI)
|
Mean % of predicted FEV1 (95% CI)
|
||
| Mild wheezy bronchitis | 40 (66) | 12 (20) | 9 (15) | 0 | 61 | 40 | 80 (79 to 82) | 109 (103 to 114) | |
| Wheezy bronchitis | 50 (57) | 13 (15) | 16 (18) | 9 (10) | 88 | 62 | 79 (76 to 81) | 102 (98 to 106) | |
| Asthma | 28 (29) | 19 (19) | 27 (28) | 24 (24) | 98 | 70 | 75* (73 to 77) | 95* (92 to 99) | |
| Severe asthma | 8 (11) | 9 (13) | 20 (29) | 33 (47) | 70 | 42 | 70* (67 to 74) | 85* (78 to 91) | |
| Control | 73 (85) | 5 (6) | 4 (5) | 4 (5) | 86 | 53 | 80 (78 to 82) | 104 (101 to 108) | |
FEV1=forced expiratory volume in 1 second; FVC=forced vital capacity.
*
P<0.001 compared with controls.