Zhuifeng Tougu capsules in the treatment of knee osteoarthritis (cold dampness obstruction syndrome): a randomized, double blind, multicenter clinical study

Table 11 Suprapatellar bursa effusion depth (x ̅ ± s)

	Group	N	Before treatment	After treatment	P value
Left	Experimental group	56 (0)	4.34 ± 2.49	4.25 ± 7.18	0.928
	Control group	60 (0)	4.86 ± 2.33	4.35 ± 4.95	0.411
	Comparison between groups	P value	0.141	0.450
Right	Experimental group	53 (0)	4.11 ± 2.02	3.93 ± 6.57	0.841
	Control group	58 (0)	4.85 ± 3.34	4.06 ± 5.41	0.212
	Comparison between groups	P value	0.446	0.903

ISSN: 1749-8546