Table 7.

Assignment of the COPD severity stage according to GOLD 2011 and GOLD 2017 in a group of 2597 patients

		GOLD 2017
		A N = 1215 n % column % line	B N = 619 n % column % line	C N = 201 n % column % line	D N = 562 n % column % line
GOLD 2011	A N = 385	385 31.69 100.00	–	–	–
	B N = 270	–	270 43.62 100.00	–	–
	C N = 1031	830 68.31 80.50	–	201 100.00 19.50	–
	D N = 911	–	349 56.38 38.31	–	562 100.00 61.69