Table 1.
Using Clinical Information to Classify the Patient in a GOLD COPD Group
| Group | Description | Symptoms By mmMRC | Risk | |
|---|---|---|---|---|
| By FEV1 | By exacerbation frequency | |||
| A | Low symptoms, low risk | mMRC 0–1 | ≥ 50% (grades 1–2) | 0–1 outpatient or 0 hospitalized exacerbation |
| B | High symptoms, low risk | mMRC 2–4 | ≥ 50% (grades 1–2) | 0–1 outpatient or 0 hospitalized exacerbation |
| C | Low symptoms, high risk | mMRC 0–1 | < 50% (grades 3–4) | ≥ 2 outpatient or ≥ 1 hospitalized exacerbations |
| D | High symptoms, high risk | mMRC 2–4 | < 50% (grades 3–4) | ≥ 2 outpatient or ≥ 1 hospitalized exacerbations |
Abbreviations: FEV1, forced expiratory volume in the first second; mMRC, modified Medical Research Council dyspnea score.