Table 2.
Author | Year | Random allocation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome assessment | Complete outcome data | Nonselective reporting | No other bias risk |
---|---|---|---|---|---|---|---|---|
Bang et al. [9] | 2005 | √ | √ | √ | √ | √ | √ | √ |
Sun et al. [10] | 2008 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Niu et al. [11] | 2010 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Bhasin et al. [12] | 2011 | Χ | Χ | Χ | √ | √ | √ | √ |
Deng et al. [13] | 2012 | Χ | Χ | Χ | Χ | Χ | Χ | Χ |
He [14] | 2012 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Bhasin et al. [15] | 2012 | Χ | Χ | Χ | √ | √ | √ | √ |
Xiao [16] | 2013 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Bhasin et al. [17] | 2013 | Χ | Χ | Χ | √ | √ | √ | √ |
Liu et al. [18] | 2014 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Xie et al. [19] | 2014 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Chen et al. [20] | 2014 | √ | √ | √ | √ | √ | √ | √ |
Prasad et al. [21] | 2014 | √ | √ | √ | √ | √ | √ | Χ |
Zhang et al. [22] | 2015 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Shen [23] | 2015 | √ | Χ | Χ | Χ | Χ | Χ | Χ |
Cai et al. [24] | 2015 | √ | √ | Χ | Χ | Χ | Χ | Χ |