Meta-Analysis
Copyright ©The Author(s) 2019.
World J Clin Cases. Mar 6, 2019; 7(5): 600-615
Published online Mar 6, 2019. doi: 10.12998/wjcc.v7.i5.600
Table 1 Quality assessment of all included studies
StudySelectionComparabilityExposureRandomizationMaskingAccountability of all patientsQuality (score)
Randomized controlled trial
Sadighi et al[18], 2006*****5
Roth et al[10], 2007****4
Gao et al[11], 2010*****5
Babu et al[9], 2017***3
Retrospective study
Abbasi et al[19], 2010******6
Kilickap et al[8], 2011*******7
Teker et al[12], 2014*********9