Table 2:

Grading of obstruction and symptoms among subjects with COPD.Frequencies shown as n (%).

Variables	COPD (N=100)	Exacerbation during previous year
		No (n=58)	Yes (n=42)
GOLD Obstruction grading
Mild (>80)	5 (5)	4 (6.9)	1 (2.4)
Moderate (50–80)	40 (40)	28 (48.3)	12 (28.6)
Severe (30–50)	40 (40)	22 (37.9)	18 (42.8)
Very severe (<30)	15 (15)	4 (6.9)	11 (26.2)
Dyspnoea grading (MMRC)
0	41 (41)	39 (67.2)	2 (4.8)
1	42 (42)	17 (29.3)	25 (59.5)
2	13 (13)	2 (3.5)	11 (26.2)
3	4 (04)	0 (0)	4 (9.5)
CAT Score mean±SD (p 0.0000)	17.9±5.6	15.7±5.5	21.0±4.1
<=20	60 (60)	44 (75.9)	16 (38.1)
>20	40 (40)	14 (24.1)	26 (61.9)