Systematic Reviews
Copyright ©The Author(s) 2021.
World J Clin Cases. Jan 6, 2021; 9(1): 102-117
Published online Jan 6, 2021. doi: 10.12998/wjcc.v9.i1.102
Table 3 Risk of bias of the included systematic reviews evaluated by risk of bias in the systematic review
Ref.Phase 1
Phase 2
Phase 3
Relevance
Study eligibility criteria
Identification and selection of studies
Data collection and study appraisal
Synthesis and findings
Risk of bias in the review
Cai et al[9], 2019YesLow riskHigh riskLow riskLow riskHigh risk
Shi et al[8], 2012YesLow riskHigh riskHigh riskHigh riskHigh risk
He et al[16], 2010YesLow riskHigh riskHigh riskHigh riskHigh risk
Li et al[17], 2011YesHigh riskHigh riskHigh riskHigh riskHigh risk
Li et al[18], 2014YesHigh riskHigh riskHigh riskNot clearHigh risk
Yang et al[19], 2019YesLow riskHigh riskHigh riskLow riskHigh risk
Zhang et al[20], 2014YesLow riskHigh riskHigh riskHigh riskHigh risk