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Included literature | Random sequence generation | Allocation concealment | Blind or not | Blind evaluation | Withdraw/Lost visit handling | Result data integrity | Selective research report | Other sources of bias |
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Li and Jia [8] | Not described | Not described | Not | Not affected by the blind method | Unknown | Completed | Yes | No significant other bias |
Jiang and Zhou [9] | Random number table method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Yao [10] | Random number table method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Liu [11] | Randomized controlled method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Leng [12] | Random number table method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Ma [13] | Randomized controlled method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Wang [14] | Randomized controlled method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Dai HX et al. [15] | Randomized controlled method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Tong et al. [16] | Random number table method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
Zhang [17] | Randomized controlled method | Not described | Not | Not affected by the blind method | Unknown | Completed | No | No significant other bias |
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