Additional file 1 of A systematic review and meta-analysis of Liuzijue in stable patients with chronic obstructive pulmonary disease

Additional file 1: Table S1 Characteristics of included studies. CG = Control Group; LG = Liuzijue Group; “ - ”=Not reported in the study; MRC = Medical Research Council Dyspnea Scale; mMRC = Modified Medical Research Council Dyspnea Scale; MIP = Maximal Inspiratory Pressure; MEP = Maximal Expiratory Pressure; 6MWD = six-minutes walking distance; 30s SST =30s Sit-to-Stand Test; FEV1 = Forced expiratory volume in one second; FEV1%pred = the percentage of predicted values of FEV1; FVC = Forced vital capacity; SGRQ = St. George’s respiratory questionnaire; CAT = Chronic Obstructive Pulmonary Disease Assessment Test.