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Risk of bias assessment results (Sterne et al., 2019).
| Assigned risk level | Description |
|---|---|
| Low risk of bias | Study assessed as having a low risk of bias for all domains |
| Some concerns | Study raises some concerns in relation to at least one domain, but is not assessed as having a high risk of bias for any domain. |
| High risk of bias | Study assessed as having a high risk of bias for at least one domain; or concerns raised across multiple domains serve to lower confidence in the overall result. |
