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Quality assessment of randomized control trial
| Study | Random sequence generation | Allocation concealment | Blinding of participants and personnel | Incomplete outcome data | Selective reporting | Other bias |
|---|---|---|---|---|---|---|
| Qinchun Pan 2021 [16] | + | ? | ? | + | + | ? |
| Rongrong Ru 2019 [17] | + | ? | ? | + | + | ? |
| Jing Yuan 2021 [18] | + | ? | ? | + | + | ? |
The randomized control trial was evaluated using the Cochrane assessment tool
+ Low risk of bias
? Unclear risk of bias
- High risk of bias
