The adjusted ORs and 95% CIs for various characteristics in each cough subtype
| Characteristic | Acute cough n=199 | Subacute cough n=126 | Chronic cough n=267 |
| Family history of chronic cough | 1.36 (1.00 to 1.84)* | 1.97 (1.36 to 2.86)*** | 1.58 (1.20 to 2.09)** |
| Moisture damage exposure | 1.35 (0.98 to 1.87) | 1.50 (1.01 to 2.22)* | 1.49 (1.11 to 2.00)** |
| Somatic symptom score† | 1.13 (1.06 to 1.21)*** | NS | 1.11 (1.03 to 1.19)** |
| Allergy | 1.50 (1.06 to 2.14)* | 1.61 (1.06 to 2.45)* | NS |
| Current asthma | NS | 2.24 (1.39 to 3.61)** | 3.70 (2.63 to 5.21)*** |
| Chronic rhinosinusitis | NS | 2.48 (1.62 to 3.81)*** | 2.95 (2.12 to 4.10)*** |
| Oesophageal reflux disease | NS | NS | 1.50 (1.03 to 2.18)* |
| Age‡ | NS | NS | 1.35 (1.18 to 1.54)*** |
Each subtype is compared with the 2716 subjects without any current cough.
ORs are presented if p<0.10. Multivariate logistic regression analysis with backward directed stepwise process.
*P<0.05, **P<0.01, ***P<0.001.
†OR is expressed per one somatic symptom.
‡OR is expressed per one decade.
NS, not significant (p>0.10).