Effect of Traditional Chinese Medicine Bufei Granule on Stable Chronic Obstructive Pulmonary Disease: A Systematic Review and Meta-Analysis Based on Existing Evidence

Table 1

Description of selected studies.

Study	Sample size		Age		Interventions		Intervention time	Indicators
	Treatment	Control	Treatment	Control	Treatment	Control
Sun et al. [18]	69	61	60.81 ± 8.18	60.51 ± 11.03	Bufei granule	Placebo	30 days	SGRQ score
Guo et al. [17]	136	135	61.89 ± 5.56	60.09 ± 5.09	Bufei granule	Placebo	12 weeks	FEV1; FVC; FEV1/predicted value; FEV1/FVC; SGRQ score
Yang [19]	34	34	67.7	66.5 ± 7.8	Bufei granule	Placebo	12 weeks	FEV1; FVC; FEV1/predicted value; FEV1/FVC; SGRQ score
Guo et al. [15]	69	61	NA	NA	Bufei granule	Placebo	12 weeks	FEV1; FVC; FEV1/predicted value; FEV1/FVC; SGRQ score

Abbreviations: NA, data not available; SGRQ, St George’s Respiratory Questionnaire; FEV₁, forced expiratory volume in one second; FVC, forced vital capacity.