Study | Random Sequence Generation | Allocation Concealment | Blinding of Participants and personnel | Blinding of Outcome assessment | Incomplete Outcome Data | Selective Reporting | Other source of bias |
---|---|---|---|---|---|---|---|
Wang 2014 [32] | sequence of entering the group | Unclear | Unclear | Unclear | Yes | Yes | Unclear |
Liu 2014 [30] | random number table | Unclear | Unclear | Unclear | No | Unclear | Unclear |
Liu 2011 [39] | unclear | Unclear | Unclear | Unclear | Yes | No | Unclear |
Zhou 2013 [37] | unclear | Unclear | Unclear | Unclear | No | Yes | Unclear |
Huang 2012 [40] | unclear | Unclear | Unclear | Unclear | Yes | Unclear | Unclear |
Zhou 2011 [34] | unclear | Unclear | Unclear | Unclear | Yes | Yes | Unclear |
Shan 2013 [31] | random number table | Unclear | Unclear | Unclear | Yes | Yes | Unclear |
Zhe 2011 [33] | sequence of entering the group | Unclear | Unclear | Unclear | Yes | Yes | Unclear |
Ling 2013 [41] | unclear | Unclear | Unclear | Unclear | Yes | Unclear | Unclear |
Guan 2011 [42] | unclear | Unclear | Unclear | Unclear | No | Unclear | Unclear |
Nie 2013 [35] | unclear | Unclear | Unclear | Unclear | Yes | Unclear | Unclear |
Lin 2014 [36] | unclear | Unclear | Unclear | Unclear | Yes | Unclear | Unclear |