Table 6 Clinician assessment of cause of asthma onset
From: A longitudinal study of adult-onset asthma incidence among HMO members
Cause of Morbidity* | Total Cases, N (%) | New-onset Cases N (%) | Reactivated Cases N (%) | Relative Risk,** [95% C.I.] |
|---|---|---|---|---|
   Infection Induced | 275 (59) | 144 (70) | 131 (51) | 1.4, [1.2, 1.6] |
   Allergy Induced | 63 (14) | 19 (9) | 44 (17) | 0.54, [0.32, 0.89] |
   Exercise Induced | 20 (4) | 9 (4) | 11 (4) | 1.02, [0.43, 2.41] |
   Other | 23 (5) | 12 (6) | 11 (4) | 1.36, [0.61, 3.02] |
   No Etiology Given | 84 (18) | 23 (11) | 61 (24) | 0.47, [0.30, 0.73] |
   Total | 465* | 207 | 258 |  |