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Quality evaluations of RCTs finally included in the meta-analysis.
| Reference | Score of item I | Score of item II | Score of item III | Score of item IV | Score of item V | Score of item VI | Score of item VII | Score of item VIII | Score of item IX | Score of item X | Score of item XI | Total scores |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Golcher (9) | 1 | 1 | 0.5 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8.5 |
| Joo 2017 (13) | 1 | 1 | 0.5 | 1 | 0.5 | 0 | 1 | 1 | 1 | 1 | 1 | 9 |
| Versteijne (14) | 1 | 1 | 0.5 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8.5 |
| Jang (12) | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 9 |
| Casadei (8) | 1 | 1 | 0.5 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8.5 |
