Characteristic | Subjects with chronic cough (N = 43) | Healthy subjects (N = 15) |
---|---|---|
Age (years) | 55.6 ± 1.9 | 52.7 ± 4.1 |
Females – number (%) | 32 (74) | 11 (73) |
Ex smokers – number (%) | 20 (47) | 4 (27) |
Atopic patients – number (%) | 14 (33) | 1 (7) |
Duration of cough (years) | 8.5 ± 1.5 | ND |
Most probable cause of cougha, | Rhinitis 22 (51) | ND |
- number (%) | Esophageal reflux 14 (33) | Â |
 | Asthma 9 (21) |  |
Leicester questionnaire total score | 13.2 ± 0.5 | ND |
Cough sensitivity to hypertonic saline (coughs/Osmol/kg) | 7.24 ± 1.03 | ND |
Histamine PD15 (mg)b | 1.28 ± 1.20 | ND |
Nitric oxide concentration (ppm) | 16.8 ± 2.0 | ND |
FEV1 (% of predicted) | 93.7 ± 1.8 | ND |
PEF variation in ambulatory monitoring (%) | 7.13 ± 0.68 | ND |