Meta-Analysis
Copyright ©The Author(s) 2018.
World J Gastroenterol. Jun 28, 2018; 24(24): 2628-2639
Published online Jun 28, 2018. doi: 10.3748/wjg.v24.i24.2628
Table 2 Newcastle-Ottawa scoring system for nonrandomized comparative studies
Ref.SelectionstarComparability starOutcomestarTotalstar
He et al[17]3227
Li et al[18]3227
Park et al[19]3227
Huang et al[20]4228