Copyright ©The Author(s) 2019.
World J Stem Cells. Oct 26, 2019; 11(10): 891-903
Published online Oct 26, 2019. doi: 10.4252/wjsc.v11.i10.891
Table 2 Evaluation of the risk of bias
Ref.Random sequence generation: Selection biasAllocation concealmentBlinding of participants and personnel: Performance biasBlinding of outcome assessment: Detection biasIncomplete outcome data: Attrition biasSelective reporting
Chen et al[45], 2013HighHighHighLowHighHigh
Huang et al[46], 2018UnclearUnclearHighLowLowUnclear
Kang et al[47], 2015LowLowLowLowLowUnclear
Liu et al[40], 2017LowUnclearHighUnclearLowLow
Luan et al[44], 2012UnclearUnclearHighUnclearHighUnclear
Min et al[39], 2013LowLowLowLowLowLow
Rah et al[42], 2017LowLowLowLowHighUnclear
Sun et al[41], 2017LowLowLowLowLowUnclear