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Jadad quality score of randomized controlled trials included in the meta-analysis
| Reference | Randomization | Blinding | Withdrawals and dropouts | Jadad score |
| [4] | Centralized randomization schedule | Double blinding | Clearly reported | 5 |
| [9] | Computer-generated list | Double blinding | Clearly reported | 5 |
| [8] | Computer-generated list | Double blinding | Clearly reported | 5 |
| [7] | Computer-generated randomized set of numbers | Double blinding | Clearly reported | 5 |
