Efficacy and Safety of Dahuang Zhechong Pill in Silicosis: A Randomized Controlled Trial

Table 4

Statistical differences after and before intervention.

	DG (after—before)				CG (after—before)
	Mean (SD)	SE	CI	value	Mean (SD)	SE	CI	value
Pulmonary function
FVC % pred	10.37 (9.26)	1.82	6.63 to 14.11	<0.001	−0.99 (10.32)	1.98	−5.07 to 3.10	0.624
DLCO % pred	10.51 (9.37)	1.84	6.73 to 14.29	<0.001	0.66 (19.09)	3.67	−6.89 to 8.21	0.859
Hypoxia and exercise capacity
SpO2	3.61 (1.93)	0.37	2.86 to 4.36	<0.001	−0.50 (2.80)	0.53	−1.58 to 0.58	0.352
6WMD	39.64 (29.87)	5.65	28.06 to 51.23	<0.001	−5.54 (61.15)	11.56	−29.25 to 18.18	0.636
K-BILD
Total	5.79 (3.79)	0.72	4.32 to 7.27	<0.001	−0.64 (4.36)	0.82	−2.32 to 1.05	0.447
Breathlessness and activities	8.48 (7.06)	1.33	5.75 to 11.21	<0.001	−1.04 (7.40)	1.40	−3.91 to 1.83	0.463
Chest symptoms	11.31 (7.48)	1.41	8.41 to 14.21	<0.001	−0.99 (8.69)	1.64	−4.36 to 2.38	0.551
Psychological symptoms	2.72 (3.02)	0.57	1.55 to 3.89	<0.001	−0.26 (4.64)	0.88	−2.06 to 1.55	0.773

Statistical differences were determined by the paired-samples t-test.