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Evidence ratings [27]
| Strong evidence of effect | More than one study with a MMAT rating of **** |
| Moderate evidence of effect | One or more studies with a MMAT of *** |
| Limited evidence of effect | One or more studies with a MMAT rating of ** or less |
| Conflicting evidence | Inconsistent findings across studies, with MMAT ratings of *** or more |
| No evidence | No studies, or conflicting findings with MMAT ratings of ** or less |
*Overall methodological rating (*one criterion met to ****all criteria met)
