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Meta-analysis of the diagnostic accuracy of dual HIV/syphilis RDTs, stratified according to the specimen type (archived, ie, frozen specimens or fresh specimens). Forest plots are shown for the diagnostic accuracy of (A) HIV and (B) syphilis diagnosis. Summary ROC curves are shown for (C) HIV and (D) syphilis diagnosis. FN, false negative; FP, false positive; RDTs, rapid diagnostic tests; ROC, receiver operating characteristic; TN, true negative; TP, true positive.
