Distribution of asthma and lung function in participants aged 42 according to severity of asthma at age 7 or 10

No (%) at age 42Lung function at age 42
Symptoms age 7No 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 bronchitis40 (66)12 (20)9 (15)0614080 (79 to 82)109 (103 to 114)
Wheezy bronchitis50 (57)13 (15)16 (18)9 (10)886279 (76 to 81)102 (98 to 106)
Asthma28 (29)19 (19)27 (28)24 (24)987075* (73 to 77)95* (92 to 99)
Severe asthma8 (11)9 (13)20 (29)33 (47)704270* (67 to 74)85* (78 to 91)
Control73 (85)5 (6)4 (5)4 (5)865380 (78 to 82)104 (101 to 108)
  • FEV1=forced expiratory volume in 1 second; FVC=forced vital capacity.

  • *P<0.001 compared with controls.