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Critical appraisal of systematic reviews.
| Author | Year of publication | Study design | Level of evidence | Validity | ||||
|---|---|---|---|---|---|---|---|---|
| PICO suitability | Appropriate searching | Relevant study included | Quality assessment of trials | Heterogeneity | ||||
| Gandapur et al. [10] | 2016 | Systematic review | 1 | - | + | + | + | - |
| Xiong et al. [11] | 2018 | Systematic review | 1 | + | + | + | + | - |
+ means present; - means absent; ? means unclear/not mentioned.
