Demographic data and co-morbid medical conditions of study participants that had been treated before inclusion in the study
| ACE, angiotensin converting enzyme; PNDS, postnasal drip syndrome; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; AHR, airway hyperresponsiveness. | |
| *Previous asthma treatment included inhaled corticosteroid and long acting bronchodilator. | |
| †Previous reflux treatment was proton pump inhibitors. | |
| ‡Previous PNDS treatment included topical nasal steroids and ingested antihistamines. | |
| §Airway hyperresponsiveness to hypertonic (4.5%) saline. | |
| Mean (SD) age (years) | 59.4 (13.6) |
| Sex (M/F) | 64/23 |
| Asthma* | 18 (20.7%) |
| Reflux† | 41 (47%) |
| ACE inhibitors | 10 (11.5%) |
| Allergies | 52 (59.8%) |
| PNDS‡ | 44 (50.6%) |
| Smoking | 2 (2.3%) |
| Mean (SD) FEV1 (% predicted) | 95 (20) |
| Mean (SD) FVC (% predicted) | 100 (21) |
| Mean (SD) FEV1/FVC | 78 (8) |
| AHR§ | 8 (9%) |