Table 2 Quality assessment of included studies
Study | Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome assessment | Incomplete outcome data | Selective reporting | Bias from other resources |
|---|---|---|---|---|---|---|---|
Shruti R. Tiwari 2016 [25] | Low risk | Unclear | Unclear | Low risk | Low risk | Low risk | Low risk |
Sandra M.Swain 2015 [19] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Sabino De Placido 2018 [33] | Low risk | High risk | Unclear | Low risk | Low risk | Low risk | Low risk |
Rashmi K. Murthy 2018 [17] | Low risk | Unclear | Low risk | Low risk | High risk | Low risk | Low risk |
Peter Beitsch 2017 [10] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Nicholas J. Robert 2017 [32] | Low risk | Unclear | Unclear | Low risk | Low risk | Low risk | Unclear |
Nadia Hussain 2018 [35] | Unclear | Unclear | Unclear | Low risk | Low risk | Low risk | Low risk |
Mothaffar Rimawi 2017 [18] | Low risk | Unclear | Low risk | Low risk | Low risk | Low risk | Low risk |
Andersson M 2017 [26] | Low risk | Unclear | Low risk | Low risk | Low risk | Low risk | Low risk |
Manish Gupta 2013 [11] | High risk | Low risk | Low risk | Low risk | High risk | High risk | Unclear |
M. Martin 2016 [13] | High risk | Unclear | Low risk | Low risk | Low risk | Low risk | Low risk |
Luca Gianni 2018 [22] | Low risk | Unclear | Low risk | Low risk | Low risk | Low risk | High risk |
Luca Gianni 2012 [15] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Kazuhiro Araki 2017 [14] | Low risk | Low risk | Unclear | Unclear | Low risk | Low risk | High risk |
Kathy D. Miller 2014 [34] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Julia Foldi 2017 [23] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
José Baselga 2010 [30] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
JASMEET C. SINGH 2017 [24] | Unclear | Unclear | Low risk | Low risk | Low risk | Low risk | Unclear |
Ian E.Krop 2016 [20] | Low risk | Unclear | Low risk | Low risk | Low risk | High risk | Low risk |
Gunter von Minckwitz 2017 [16] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Edith A. Perez 2017 [21] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Edith A. Perez 2016 [27] | Low risk | Unclear | Low risk | Low risk | Low risk | Low risk | Low risk |
Chia C. Portera 2008 [31] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Chau Dang 2015 [28] | Low risk | Unclear | Low risk | Low risk | Low risk | Low risk | Low risk |
Bao D Dao 2015 [29] | Unclear | Unclear | Low risk | Low risk | Low risk | Low risk | Unclear |
Ander Urruticoechea 2017 [9] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |