GOLD guideline group | Phase 1 (n = 2358) | Phase 2 (n = 2177) | P value |
|---|
Group A | 1820 (77.2%) | 1663 (76.4%) | 0.31 |
Group B | 399 (16.9%) | 359 (16.5%) |
Group C | 78 (3.3%) | 79 (3.6%) |
Group D | 61 (2.6%) | 76 (3.5%) |
- Group A: 0 or 1 moderate exacerbations (not leading to hospital admissions) AND mMRC 0–1 or CAT< 10.
- Group B: 0 or 1 moderate exacerbations (not leading to hospital admissions) AND mMRC ≥2 or CAT ≥10.
- Group C: ≥2 moderate exacerbations or ≥ 1 leading to hospitalization AND mMRC 0–1 or CAT< 10.
- Group D: ≥2 moderate exacerbations or ≥ 1 leading to hospitalization AND mMRC ≥2 or CAT ≥10.
- CAT = COPD assessment test; mMRC = modified Medical Research Council dyspnoea questionnaire.
