The bivariate associations between characteristics at baseline in 2017 and presence of any cough at the 12-month follow-up
| Characteristic at baseline | Subjects with any cough at follow-up (n=99) | Subjects without any cough at follow-up (n=89) | p-value |
| Family history of chronic cough | 56.1% | 37.1% | 0.009 |
| History of previous episodes of prolonged cough | 29.3% | 14.6% | 0.016 |
| Cough trigger | 85.9% | 61.8% | <0.001 |
| Wheezing | 72.7% | 43.2% | <0.001 |
| Chronic rhinitis | 32.3% | 16.9% | 0.014 |
| Gastro-oesophageal reflux disease | 18.2% | 7.9% | 0.038 |
| Age years | 51.5 (49.6–53.3) | 48.5 (46.5–50.6) | 0.035 |
| Males | 14.1% | 18.0% | 0.473 |
| BMI >25 kg·m−2 | 67.7% | 46.6% | 0.004 |
| Duration of cough 3–8 weeks | 42.4% | 27.0% | 0.027 |
| Somatic symptom score | 3.74 (3.31–4.16) | 2.57 (2.22–2.92) | <0.001 |
| LCQ total score | 14.9 (14.28–15.53) | 16.1 (15.53–16.67) | 0.006 |
| Dog ownership | 36.4% | 21.3% | 0.024 |
| Education years | 15.9 (15.35–16.41) | 16.5 (16.01–17.07) | 0.084 |
| Family members | 1.68 (1.42–1.94) | 1.89 (1.65–2.13) | 0.089 |
Data are presented as mean (95% CI) unless otherwise stated. Characteristics with at least suggestive association (p<0.10) and sex are presented. BMI: body mass index; LCQ: Leicester Cough Questionnaire.