Table 3.
Summary of Risk of Bias Assessment.
| Risk of bias tool | Risk of bias | Inconsistency | Imprecision | Indirectness | Publication bias | Quality | Importance |
|---|---|---|---|---|---|---|---|
| GRADE (n = 39) | High | Serious | Serious | Moderate | Moderate | Very low | Important |
| ROBINS-I (n = 9) | Serious |
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