[Retracted] Clinical Efficacy and Safety of Chondroitin Combined with Glucosamine in the Treatment of Knee Osteoarthritis: A Systematic Review and Meta-Analysis

Table 1

Basic characteristics of literature.

Include the literature	Year of publication	N (T/C)	Outcome index	Experimental time	Whether it is random or not	Whether it is blind or not	Jadad score
Wang Lei	2021	41/42	①③	28d	Yes	No	3
Yao Yuqian	2020	18/18	②	30d	I do not know	No	1
Yang Baohua	2018	39/39	②	24w	Yes	No	2
Zhou Huaman	2018	30/30/30	①	28d	Yes	No	2
Sun Xiuqing	2016	39/39/39	②	3 m	Yes	No	2
Shen Yuhui	2006	120/120/120	①③	12w	Yes	Yes	5

Note: ①—clinical effect; ②—scores of joint pain, tenderness, swelling, and dysfunction; ③—incidence of adverse reactions.