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Level of Evidence
| Level of evidence | Number of studies with the corresponding level of evidence |
|---|---|
| Strong | Consistent findings among ≥3 high-quality studies |
| Moderate | Consistent findings among ≥1 high-quality studies and ≥1 low-quality studies |
| Limited | Findings from ≥1 low-quality studies or only 1 study irrespective of study quality |
| Conflicting | Inconsistent findings among ≥2 studies irrespective of study quality |
| No evidence | No studies found |
