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Table 2 Quality of articles using the QUADAS tool

From: Diagnostic performance of confocal laser endomicroscopy for optical diagnosis of gastric intestinal metaplasia: a meta-analysis

Study Risk of bias Applicability Concerns
Patient selection Index test Reference standard Flow and timing Patient selection Index test Reference standard
Guo etal [27] (2008) L L L L L L L
Zhen etal [29] (2014) L L L L L L L
Rapat etal [20] (2013) H L L L H L L
Lim etal [19] (2013) L L L L L L L
  1. L low risk; H high risk; U nuclear risk