Risk of bias of included studies. “Unclear” means that not enough information was available to make a determination regarding that criterion.
| Study | Adequate Sequence Generation | Allocation Concealment | Blinding | Incomplete Outcome Data Addressed | Free of Selective Reporting | Free of Other Bias |
|---|---|---|---|---|---|---|
| Boileau 200239 | Yes | Unclear | No | Yes | Unclear | Yes |
| Gartsman 200035 | Yes | Unclear | No | Unclear | Unclear | Yes |
| Gartsman 200538 | Unclear | Unclear | No | Unclear | Unclear | Unclear |
| Kircher 200940 | Unclear | Unclear | No | Unclear | Unclear | Unclear |
| Lo 200534 | Unclear | Unclear | Yes | Yes | Unclear | No |
| Nuttal 200737 | Unclear | Yes | No | Yes | Unclear | Unclear |
| Rahme 200936 | Unclear | Yes | No | Yes | Unclear | No |