Study | Selection | Comparability | Outcome | Total Quality Score |
---|
Shraim 2019 [13] | **** | ** | *** | 9 |
Shraim 2017 [7] | **** | ** | *** | 9 |
Shraim 2015 [6] | **** | ** | *** | 9 |
Webster 2013 [11] | **** | ** | *** | 9 |
Graves 2012 [10] | **** | ** | ** | 8 |
Webster 2010 [37] | **** | ** | *** | 9 |
Mahmud 2000 [12] | **** | ** | *** | 9 |