Classic Chinese Acupuncture versus Different Types of Control Groups for the Treatment of Chronic Pain: Review of Randomized Controlled Trials (2000–2018)

Table 3

Quality score, number of studies, and efficiency of real acupuncture over the control group in each selected study.

Quality score	Number of studies	Acupuncture effect over the control group
		Better	Worse	Same
7	1	1
8	3	3
9	4	2		2
10	7	5	1	1
11	6	5		1
12	16	13	1	2
13	12	11		1
14	9	6	1	2
15	1			1
16	2	1	1