Analysis of the Efficacy and Pharmacological Mechanisms of Action of Zhenren Yangzang Decoction on Ulcerative Colitis Using Meta-Analysis and Network Pharmacology

Table 2

Risk of bias in the five included RCTs.

Study year[ref]	Random sequence generation	Allocation concealment	Blinding of patient	Blinding of assessor	Incomplete outcome data	Selective reporting	Other bias
Yuan JY, 2009 [11]	U	U	H	H	L	U	L
Zhao KH, 2010 [12]	U	U	H	H	L	U	L
Wang L, 2015 [27]	U	U	H	H	L	U	L
Han Y, 2019 [28]	H	U	H	H	L	U	L
Dai AC, 2021 [29]	U	U	H	H	L	U	L

RCT: randomized controlled trial; L: low risk of bias; H: high risk of bias; U: unclear (uncertain risk of bias).