Table 3

Cochrane risk of bias assessment

StudyRandom sequence generationAllocation concealmentBlinding of participantsBlinding of
personnel		Blinding of outcome assessmentIncomplete
outcome data		Selective outcome
reporting
Behera et al13
de Jonge et al14
Dragoo et al15
Gautam et al16
Gosens et al17­­­­­­­
Kesikburun et al18­­­­­­­­
Krogh et al19­­­­­­­­
Krogh et al20­­­­­­­­
Lebiedzinski et al21­­­­­­­­
Mishra et al22­­­­­­­­
Montalvan et al23­­­­­­­­
Palacio et al24­­­­­­­­
Rha et al25­­­­­­­­
Shams et al26­­­­­­­­
Stenhouse et al27­­­­­­­­
Yadav et al28­­­­­­­­

  • Green colour indicates low bias risk; yellow colour indicates uncertain bias risk and red colour indicates high bias risk.