Table 2 Assessment of risk of bias using the Cochrane risk-of-bias tool
Study | Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome assessment | Incomplete outcome data | Selective reporting | Other bias |
|---|---|---|---|---|---|---|---|
Bernard/1987 | Low | Low | Low | Low | Low | Unclear A | Low |
Meduri/1998 | Low | Low | Low | Low | Low | Low | Low |
Annane/2006 | Low | Low | Low | Low | Low | Low | Low |
Steinberg/2006 | Low | Low | Low | Low | Low | Low | Low |
Meduri/2007 | Low | Low | Low | Low | Low | Low | Low |
Rezk/2013 | UnclearA | High | High | High | Unclear A | Unclear A | Unclear A |
Tongyoo/2016 | Low | Low | Low | Low | Low | Low | Low |
Villar/2020 | Low | Low | Low | Low | Low | Low | Low |
Tomazini/2020 | Low | High | High | High | Low | Low | Low |