Directness of evidence Directness of evidence Directness of evidence Directness of evidence Directness of evidence Risk of Bias Risk of Bias Risk of Bias Risk of Bias Risk of Bias Risk of Bias Risk of Bias
Study (et al), year
Study design
Sample size(n)
Sample size(n)
domain
determinant
out- come
DoE total
DoE total
Patient selection
Allocation concealment
Blinding
Incomplete outcome
Follow up
Selective reporting
L. Chen, 2012 RCT 25 25 H H - -
J. Chen, 2014 RCT 41 41 H H - -
Ahn, 2017 PT 30 30 H H - - -
Iaremenko 2018 PT 44 44 H H - - -