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Strength of evidence (Hayden et al., 2019)
| Strength of evidence | Description |
|---|---|
| Strong | Defined as greater than 75% of studies showing the same direction of effect in multiple low RoB studies |
| Moderate | Findings in multiple high RoB studies and/or one study with low RoB |
| Limited | One study available |
| Conflicting | Inconsistent findings across studies |
| No evidence | No association between prognostic factor and outcome of interest |
Abbreviation: RoB, risk of bias.
