Table 2 GOLD criteria for COPD

A = low risk, low symptom burden

 • Low symptom burden (mMRC of 0–1 or CAT score < 10) and

 • FEV1 of 50% or greater (old GOLD 1–2) and low exacerbation rate (0–1/year)

B = low risk, higher symptom burden

 • Higher symptom burden (mMRC of 2 or more or CAT of 10 or more) and

 • FEV1 of 50% or greater (old GOLD 1–2) and low exacerbation rate (0–1/year)

C = high risk, low symptom burden

 • Low symptom burden (mMRCof 0–1 or CAT score < 10) and

 • FEV1 < 50% (old GOLD 3–4) and/or high exacerbation rate (2 or more/year)

D = high risk, higher symptom burden

 • Higher symptom burden (mMRC of 2 or more or CAT of 10 or more) and

 • FEV1 < 50% (old GOLD 3–4) and/or high exacerbation rate (2 or more/year)