Study | Selection | Comparability | Outcome | Total score |
---|---|---|---|---|
Mehrpour et al. 2019 [13] | **** | * | ** | 7 |
Yang et al. 2019 [15] | **** | * | *** | 8 |
Zhao et al. 2017 [12] | *** | ** | ** | 7 |
Zhao et al. 2016 [21] | **** | ** | ** | 8 |
Tu et al. 2015 [19] | *** | ** | ** | 7 |
Al-khaled et al. 2014 [17] | *** | * | * | 5 |
Saarinen et al. 2014 [18] | *** | ** | *** | 8 |
Padjen et al. 2014 [20] | *** | ** | ** | 7 |
Padjen et la 2013 [10] | **** | * | *** | 8 |
Saposnik et al. 2013 [11] | **** | * | * | 6 |
Sung et al. 2013 [14] | *** | ** | ** | 7 |
Frank et al. 2012 [9] | *** | * | ** | 6 |
Seet et al. 2011 [8] | *** | ** | ** | 7 |
Awadh et al. 2010 [25] | **** | * | ** | 7 |
Sanak et al. 2010 [16] | **** | ** | * | 7 |
Zhang et al. 2010 [7] | *** | ** | ** | 7 |
Bluhmki et al. 2009 [5] | **** | ** | *** | 9 |
Kimura et al. 2009 [6] | *** | * | ** | 6 |