Table 6.

Assignment of the COPD severity stage according to GOLD 2007 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 2007	Mild N = 340	280 23.05 82.35	31 5.01 9.12	18 8.96 5.29	11 1.96 3.24
	Moderate N = 693	105 8.64 15.15	239 38.61 34.49	46 22.89 6.64	303 53.91 43.72
	Severe N = 1474	825 67.90 55.97	322 52.02 21.85	135 67.16 9.16	192 34.16 13.03
	Very severe N = 90	5 0.41 5.56	27 4.36 30.00	2 1.00 2.22	56 9.96 62.22