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Quality of clinical trials included in the present meta-analysis
| Concealment of allocation | Blinded investigator | Blinded participant | Blinded assessor | Blind data analysis | Intention-to-treat | Lost to follow-up |
|---|---|---|---|---|---|---|
| Adequate: 5 | Yes: 4 | Yes: 4 | Yes: 3 | Yes: 1 | Declared: 3 | Yes: 6 |
| Inadequate: 1 | No: 2 | No: 1 | No: 1 | No: 1 | Not declared: 6 | No: 0 |
| Obscure: 3 | Obscure: 3 | Obscure: 4 | Obscure: 5 | Obscure: 7 | Obscure: 3 |
