Table 5. Etiologies of chronic cough patients.
| Etiology | Cases, n (%) |
|---|---|
| Single etiology | 332 (82.59) |
| GERC | 114 (28.36) |
| CVA | 72 (17.91) |
| AC | 53 (13.18) |
| EB | 43 (10.70) |
| UACS | 26 (6.47) |
| Post infectious cough | 12 (2.96) |
| ACEI-related chronic cough | 8 (1.99) |
| Psychogenic cough | 3 (0.75) |
| Premature beat induced cough | 1 (0.25) |
| Dual etiologies | 56 (13.93) |
| GERC + AC | 20 (4.98) |
| GERC + EB | 19 (4.73) |
| GERC + CVA | 7 (1.74) |
| GERC + UACS | 2 (0.50) |
| EB + UACS | 6 (1.49) |
| ACEI-related cough + CVA | 1 (0.25) |
| ACEI-related cough + AC | 1 (0.25) |
| Three etiologies | 4 (0.99) |
| GERC + AC + UACS | 2 (0.50) |
| GERC + EB + UACS | 1 (0.25) |
| GERC + CVA + UACS | 1 (0.25) |
| Unexplained etiologies | 10 (2.49) |
| Total | 402 |
GERC, gastroesophageal reflux-induced chronic cough; CVA, cough variant asthma; AC, atopic cough; EB, eosinophilic bronchitis; UACS, upper airway cough syndrome; ACEI, angiotensin-converting enzyme inhibitor.