| Selection | Comparability | Outcome /Exposure |
---|---|---|---|
Abu-Hashim 2022 [26] | ** | * | ** |
Al-Alfy 2021 [9] | *** | * | ** |
Alchalabi 2017 [49] | *** | ** | ** |
Algebally 2014 [66] | *** | * | ** |
Ayati 2017 [60] | *** | * | ** |
Ballcacer 2016 | ** | * | ** |
Bassetty 2021 [61] | ** | ––– | ** |
Borg 2018 [28] | *** | * | ** |
Bowman 2014 [51] | ** | * | ** |
Budorick 2016Â | ** | * | ** |
Cali 2013 [20] | *** | * | ** |
Chong 2018 [30] | *** | * | ** |
Chou 2000 [65] | ** | * | ** |
Comstock 2004 [62] | ** | ––––- | ** |
Davutoglu 2018 [31] | *** | * | * |
De Marcillac 2016 [24] | *** | * | * |
Dwyer 2008 [16] | ** | * | ** |
El-Wakeel 2018 [59] | *** | * | ** |
ElHawary 2013 [32] | ** | * | ** |
Finberg 1992 [33] | ** | ––––– | * |
Fishman 2011 [63] | ** | * | ** |
Fitzpatrick 2013 | ** | * | ** |
Garofalo 2019 [35] | *** | * | ** |
Guo 2021 [37] | *** | * | ** |
Hamada 2011 [36] | **** | ** | *** |
Hamisa 2015 [34] | * | * | * |
Japaraj 2007 [15] | ** | ––––– | * |
Knight 2018 [53] | *** | * | ** |
Kumar 2016 | *** | * | ** |
Lerner 1995 [38] | * | * | * |
Lim 2011 [67] | ** | * | ** |
Lopes 2019 [25] | *** | * | ** |
Luo 2019 [43] | ** | * | ** |
Maged 2018 [10] | *** | * | ** |
Magied 2018 [64] | *** | * | ** |
Maher 2013 [41] | *** | ** | *** |
Mansour 2011 [42] | ** | * | ** |
Marsoosi 2018 | *** | * | ** |
Masselli 2008 [22] | ** | * | ** |
Morel 2020 | *** | * | ** |
Nawab 2017 | *** | * | ** |
Peker 2013 [45] | *** | * | * |
Pillioni 2016 [46] | *** | ** | *** |
Rac 2014 | ** | * | ** |
Rekawek 2021 [56] | *** | * | ** |
Rezk 2014 | *** | ** | *** |
Riteau 2014 [17] | ** | * | ** |
Romero 2021 | *** | * | ** |
Shih 2009 [19] | ** | * | ** |
Shweel 2012 [48] | ** | * | ** |
Twickler 2000 [21] | ** | * | ** |
Warshak 2006 [58] | *** | * | ** |
Xia 2020 [23] | ** | * | ** |
Zhou 2014 [18] | ** | * | ** |