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Table 13 The risk of bias and study quality for each colic review

From: A comparison of two assessment tools used in overviews of systematic reviews: ROBIS versus AMSTAR-2

Colic AMSTAR-2 ROBIS
Multiple CAM therapies
Perry 2011 [29] Low Low
 Bruyas-Bertholon 2012 [30] CL High
 Harb 2016 [31] CL High
 Gutierrez-Castrellon 2017 [32] CL High
Manipulation therapies
 Dobson 2012 [33] High Low
 Gleberzon 2012 [34] CL High
 Carnes 2017 [35] CL Unclear
Acupuncture
 Skejeie 2018 [36] Low Unclear
Herbal medicine
 Anheyer 2017 [37] CL High
Probiotics
 Sung 2013 [38] CL Unclear
Anabrees 2013 [39] Low Low
 Urbanska 2014 [40] CL High
Xu 2015 [41] CL Low
 Schreck Bird 2017 [42] CL High
 Dryl 2018 [43] CL High
 Sung 2018 [44] LOW Unclear
  1. When AMSTAR-2 is low, this should correspond to ROBIS being of high risk of bias. The italicised reviews show discrepancies between the overall rating of quality/bias