Table 1.
Demographic and clinical characteristics of participants with COPD
| Characteristics | All patients (n=372) |
|---|---|
| Age (years) | 62.2±8.3 |
| Gender | |
| Male | 319 (85.8%) |
| Female | 53 (14.2%) |
| BMI (kg/m2) | 22.3±3.5 |
| Smoking pack years | 40.0±32.2 |
| Exacerbations in the last 12 months | |
| 0 | 175 (47.0%) |
| 1 | 104 (28.0%) |
| ≥2 | 93 (25.0%) |
| FEV1/FVC | 0.44±0.13 |
| FEV1% predicted | 48.6±18.9 |
| mMRC | 1.9±0.9 |
| CAT | 15.4±6.0 |
| Mild (0–10) | 85 (22.8%) |
| Medium (11–20) | 211 (56.7%) |
| High (21–30) | 72 (19.4%) |
| Very high (31–40) | 4 (1.1%) |
| CCQ | 2.0±0.7 |
| Acceptable (CCQ<1) | 10 (2.7%) |
| Acceptable for moderate disease (1≤CCQ<2) | 172 (46.2%) |
| Instable-severe limited (2≤CCQ<3) | 156 (41.9%) |
| Very instable-very severe limited (CCQ≥3) | 34 (9.2%) |
| GOLD grades | |
| 1: Mild | 30 (8.1%) |
| 2: Moderate | 122 (32.8%) |
| 3: Severe | 172 (46.2%) |
| 4: Very severe | 48 (12.9%) |
Note: Data presented as mean ± SD or n (%).
Abbreviations: BMI, body mass index; CAT, COPD Assessment Test; CCQ, Clinical COPD Questionnaire; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; GOLD, global initiative for chronic obstructive lung disease; mMRC, modified Medical Research Council dyspnea score.