Table 1. Baseline clinical characteristics of the COREA cohort.
| Total number of patients (n = 736) | |
| Age (years; mean ± SD) | 49.9±15.4 |
| Sex | |
| Male | 45% |
| Female | 55% |
| BMI (kg/m2; mean ± SD) | 24.2±3.3 |
| Atopy | |
| Presence | 52% |
| Absence | 48% |
| Rhinosinusitis | |
| Presence | 67% |
| Absence | 33% |
| Family history of allergic diseases | |
| Presence | 47% |
| Absence | 53% |
| Duration of asthma (years; mean ± SD) | 9.8±11.3 |
| History of exacerbation | |
| Presence | 39% |
| Absence | 61% |
| Smoking | |
| Current | 15% |
| Ex- | 45% |
| Non- | 40% |
| Pack-years of smoking in smokers (mean ± SD) | 22.4±20.3 |
| Blood eosinophils (% of total WBC; mean ± SD) | 7.3±57.5 |
| Sputum eosinophils (% of total WBC; mean ± SD | 12.5±17.0 |
| Log IgE (mean ± SD) | 2.3±0.7 |
| Initial FEV1/FVC (%; mean ± SD) | 74.0±12.3 |
| Initial FEV1 (predicted %; mean ± SD) | 81.5±21.8 |
| BDR (L; mean ± SD of 457 patients) | 0.2±0.6 |
| Initial severity of asthma | |
| Mild intermittent | 5% |
| Mild persistent | 19% |
| Moderate persistent | 47% |
| Severe persistent | 29% |
Abbreviations: WBC, white blood cell; BMI, Body mass index.