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Risk of bias assessment results (Sterne et al., 2016).
| Assigned risk level | Description |
|---|---|
| Low risk of bias | Study assessed as having a low risk for all domains |
| Moderate risk of bias | Study assessed as having low or moderate risk for all domains |
| Serious risk of bias | Study assessed as having serious risk of bias in at least one domain, but not at critical risk of bias in any domain. |
| Critical risk of bias | Study assessed having critical risk of bias in at least one domain |
