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Meta-Analysis
©The Author(s) 2019.
World J Gastroenterol. Jul 21, 2019; 25(27): 3649-3663
Published online Jul 21, 2019. doi: 10.3748/wjg.v25.i27.3649
Table 2 Quality assessment of randomized controlled trials with Cochrane Collaboration’s tool
Author (year)Selection
Performance
Detection
Attrition
Reporting
Other
BiasBiasBiasBiasBiasBias
El Ansary (2013)UnclearHighUnclearLowLowLow
Sun (2015)UnclearHighUnclearLowLowLow
Dong (2008)UnclearHighUnclearLowLowLow
Lee (2015)UnclearHighUnclearLowLowLow
Lee (2018)UnclearHighUnclearLowLowLow
Qiu (2011)UnclearHighUnclearLowLowLow
Yu (2015)UnclearHighUnclearLowLowLow


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