Table 2. Combined COPD assessment.

Patient category	Characteristics	Spirometric classification	Exacerbations (year)	Hospital admission	CAT	mMRC
A	Low risk, less symptoms	GOLD 1–2	≤1	0	<10	0–1
B	Low risk, more symptoms	GOLD 1–2	≤1	0	≥10	≥2
C	High risk, less symptoms	GOLD 3–4	≥2	≥1	<10	0–1
D	High risk, High symptoms	GOLD 3–4	≥2	≥1	≥10	≥2

CAT, COPD assessment test; GOLD, global initiative for chronic obstructive lung disease; mMRC, modified medical research council.