Stem cell treatment and cerebral palsy: Systemic review and meta-analysis

Table 2 Evaluation of the risk of bias

Ref.	Random sequence generation: Selection bias	Allocation concealment	Blinding of participants and personnel: Performance bias	Blinding of outcome assessment: Detection bias	Incomplete outcome data: Attrition bias	Selective reporting
Chen et al[45], 2013	High	High	High	Low	High	High
Huang et al[46], 2018	Unclear	Unclear	High	Low	Low	Unclear
Kang et al[47], 2015	Low	Low	Low	Low	Low	Unclear
Liu et al[40], 2017	Low	Unclear	High	Unclear	Low	Low
Luan et al[44], 2012	Unclear	Unclear	High	Unclear	High	Unclear
Min et al[39], 2013	Low	Low	Low	Low	Low	Low
Rah et al[42], 2017	Low	Low	Low	Low	High	Unclear
Sun et al[41], 2017	Low	Low	Low	Low	Low	Unclear