A Randomized Controlled Study of the Yi Qi Gu Biao Pill in the Treatment of Frequent Exacerbator Phenotype in Chronic Obstructive Pulmonary Disease (Lung and Spleen Qi Deficiency Syndrome)

Table 2

The change of CAT between the YQGB and Pb groups.

	The change of CAT after one month ()		The change of CAT after two months ()		The change of CAT after three months ()
	≥2 points	<2 points	≥2 points	<2 points	≥2 points	<2 points
YQGB	27	5	32	1	33	0
Pb	18	10	20	4	25	6
	3.214		3.229		7.048
	0.073		0.072		0.01