Characteristics | Subjects (n = 62) |
---|---|
Sex, female/male (n) | 40/22 |
Age (years) | 53.6 (11.9) |
Duration of cough symptoms (years) | 10.6 (10.0) |
FEV1 % predicted | 103.8 (16.9) |
BMI (kg/m2) | 25.1 (4.8) |
Smoking status (n) Never/previous | 38/24 |
Chest X-ray (n) Normal/unknown | 59/3 |
Methacholine provocation test (n) Normal/unknown | 52/10 |