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(a, b). ROC curves of all studies included in the meta-analysis (34 studies)
a: ROC curves of all studies included in the meta-analysis (34 studies with 123 tables)
b: ROC curves of studies when selecting contingency tables reporting the highest accuracy (34 studies with 48 tables)
Abbreviations: ROC=receiver operating characteristic; SENS= sensitivity; SPEC= specificity.
