Table 4.
Physician-diagnosed underlying conditions or behaviors related to CC
| South Korea (N = 101) | Taiwan (N = 259) | |
|---|---|---|
| Underlying conditionsa | % | % |
| Allergic rhinitis | 36.6 | 32.8 |
| Asthma | 20.8 | 12.7 |
| Chronic bronchitis | 22.8 | 21.6 |
| Chronic obstructive pulmonary disease (COPD) | 2.0 | 2.3 |
| Chronic rhinitis | 29.7 | 7.7 |
| Chronic sinusitis | 12.9 | 10.4 |
| Emphysema | 0.0 | 1.2 |
| Gastro-esophageal reflux disease (GERD) | 18.8 | 22.4 |
| I cough out of habit | 24.8 | 15.1 |
| Nasal allergies | 22.8 | 30.5 |
| Nasal polyps | 1.0 | 4.6 |
| Post-nasal drip | 16.8 | 38.6 |
| Sinus bronchial syndrome | 2.0 | 3.9 |
| Vocal cord dysfunction | 3.0 | 3.5 |
| None | 9.9 | 9.3 |
| Others | 3.0 | 3.9 |
| I do not know | 11.9 | 9.7 |
CC chronic cough
aConditions or behaviors related to CC were defined by patients’ responses to the question “Has a doctor ever told you that any of the following conditions or behaviors are related to your chronic cough?” Patients were allowed to choose multiple underlying diseases. If there were no underlying diseases, patients were allowed to choose only “I don’t know” or “None”