Table 5 Summary of the risk of bias in RCT, non randomised controlled trials and controlled before-after studies
Risk of bias category | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Was the allocation sequence adequately generated? | U | L | L | L | L | L | L | L | L | U | L | H | U | H |
Was the allocation adequately concealed? | L | L | L | L | L | L | U | L | L | U | U | H | U | U |
Were baseline outcome measurements similar? | L | U | U | L | U | L | H | L | L | H | H | L | H | H |
Were baseline characteristics similar? | L | U | U | L | L | L | L | L | L | H | H | L | H | L |
Were incomplete outcome data adequately addressed? | L | L | L | L | H | H | L | H | H | L | U | H | H | H |
Was knowledge of the allocated intervention adequately prevented during study? | L | L | L | H | L | U | U | L | L | L | U | U | U | U |
Was the study adequately protected against contamination? | L | L | L | L | L | L | L | L | L | L | L | L | L | U |
Was the study free from selective outcome reporting? | L | L | L | L | L | L | L | L | L | L | L | L | L | L |
Was the study free from other risk of bias? | L | L | L | L | L | L | L | H | H | L | L | L | L | L |