Study | Study Design | A | B | C | D | Total score |
---|---|---|---|---|---|---|
Alavi et al. 2015 [45] | CS | 1 | 0 | 1 | 1 | 3 |
Asefa et al. 2014 [27] | CS | 1 | 1 | 1 | 1 | 4 |
Aye et al. 2010 [46] | RC | 1 | 0 | 1 | 1 | 4 |
Basnet et al. 2009 [47] | CS | 1 | 1 | 1 | 1 | 4 |
Behera et al. 2013 [48] | CS | 1 | 1 | 1 | 1 | 4 |
Belkina et al. 2014 [44] | CS | 1 | 1 | 1 | 1 | 4 |
Biya et al. 2010 [49] | CS | 1 | 0 | 1 | 1 | 3 |
Buregyeya et al. 2014 [50] | CS | 1 | 0 | 1 | 1 | 3 |
Cambanis et al 2007 [51] | CS | 1 | 1 | 1 | 1 | 4 |
Deponti et al. 2013 [52] | CS | 1 | 0 | 1 | 1 | 3 |
Ekinci et al. 2014 [22] | CS | 1 | 0 | 1 | 1 | 3 |
Ford et al. 2009 [21] | CS | 1 | 0 | 1 | 1 | 3 |
Gebeyehu et al. 2014 [34] | CS | 1 | 0 | 1 | 1 | 3 |
Gosoniu et al. 2008 [19] | CS | 1 | 0 | 1 | 1 | 3 |
Gosoniu et al. 2008 [19] | CS | 1 | 0 | 1 | 1 | 3 |
Gosoniu et al. 2008 [19] | CS | 1 | 0 | 1 | 1 | 3 |
Huong et al. 2007 [30] | CS | 1 | 1 | 1 | 1 | 4 |
Hussen et al. 2012 [35] | CS | 1 | 0 | 1 | 1 | 3 |
Jurcev-Savicevic et al. 2013 [53] | CS | 1 | 1 | 1 | 1 | 4 |
Kansiime et al. 2013 [54] | CS | 1 | 1 | 1 | 1 | 4 |
Li et al. 2012 [55] | CS | 1 | 1 | 1 | 1 | 4 |
Maamari et al. 2008 [25] | CS | 1 | 1 | 1 | 1 | 4 |
Maciel et al. 2010 [56] | CS | 1 | 1 | 1 | 1 | 4 |
Maior et al. 2012 [57] | CS | 1 | 1 | 1 | 1 | 4 |
Makwakwa et al. 2014 [58] | CS | 1 | 1 | 1 | 1 | 4 |
Mesfin et al. 2009 [29] | CS | 1 | 1 | 1 | 1 | 4 |
Mfinanga et al. 2008 [59] | CS | 1 | 1 | 1 | 1 | 4 |
Mohamed et al. 2013 [36] | CS | 1 | 1 | 1 | 1 | 4 |
Nasehi et al. 2012 [60] | CS | 1 | 1 | 1 | 1 | 4 |
Ngadaya et al. 2009 [61] | CS | 1 | 1 | 1 | 1 | 4 |
Ngangro et al. 2012 [62] | CS | 1 | 1 | 1 | 1 | 4 |
Pradhan et al. 2010 [43] | CS | 1 | 1 | 1 | 1 | 4 |
Rabin et al. 2013 [63] | CS | 1 | 1 | 1 | 1 | 4 |
Sabawoon et al. 2011 [31] | CS | 1 | 0 | 1 | 1 | 3 |
Saifodine et al. 2013 [37] | CS | 1 | 1 | 1 | 1 | 4 |
Sendagire et al. 2010 [64] | CS | 1 | 1 | 1 | 1 | 4 |
Takarinda et al. 2015 [32] | CS | 1 | 1 | 1 | 1 | 4 |
Tamhane et al. 2012 [23] | CS | 1 | 0 | 1 | 1 | 3 |
Ukwaja et al. 2013 [24] | CS | 1 | 1 | 1 | 1 | 4 |
Woith et al. 2014 [65] | CS | 1 | 0 | 1 | 1 | 3 |
Yimer et al. 2015 [66] | CS | 1 | 1 | 1 | 1 | 4 |