Meta-Analysis of the Effect of Traditional Chinese Medicine Compounds Combined with Standard Western Medicine for the Treatment of Diabetes Mellitus Complicated by Coronary Heart Disease

Table 2

Quality of included trials assessment.

Inclusion studies	Randomized approach (2 points)	Double-blind (2 points)	Withdrawal loss (1 point)	Total	Article quality
Zhang 2020 [13]	Random grouping method	Not described	No shedding	1	Low
Zhang 2020 [14]	Not described	Not described	No shedding	1	Low
Zhang 2020 [15]	Random allocation method	Not described	No shedding	1	Low
Zhang and Zhang 2020 [16]	Random digital tables	Not described	No shedding	3	Medium
Ye 2020 [17]	Random digital tables	Not described	No shedding	3	Medium
Xing et al. 2019 [18]	Random digital tables	Not described	No shedding	3	Medium
Guan and Shang 2019 [19]	Random digital tables	Not described	No shedding	3	Medium
Liu et al. 2019 [20]	Not described	Not described	No shedding	1	Low
Jiang 2019 [21]	Not described	Not described	No shedding	1	Low
Zuo 2019 [22]	Not described	Not described	No shedding	1	Low
Liu et al. 2019 [23]	Not described	Not described	No shedding	1	Low
Sun et al. 2018 [24]	Random digital tables	Not described	No shedding	3	Medium
Liu et al. 2018 [25]	Not described	Not described	No shedding	1	Low
Deng 2018 [26]	Not described	Not described	No shedding	1	Low
Zhang 2017 [27]	File sequence	Not described	No shedding	1	Low
Yan et al. 2017 [28]	Random digital tables	Not described	No shedding	3	Medium
Sui 2016 [29]	Not described	Not described	No shedding	1	Low
Tang 2016 [30]	Not described	Not described	No shedding	1	Low
Li and Shang 2015 [31]	Random digital tables	Not described	No shedding	3	Medium
He 2013 [32]	Random digital tables	Not described	No shedding	3	Medium
Liu 2012 [33]	Not described	Not described	No shedding	1	Low
Li and Yang 2009 [34]	Not described	Not described	No shedding	1	Low
Ma 2009 [35]	Not described	Not described	No shedding	1	Low