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Table 3 Definitions of diagnostic test parameters

From: The usefulness of 18F-FDG PET/CT for assessing methotrexate-associated lymphoproliferative disorder (MTX-LPD)

Diagnostic test parameter Definition
Sensitivity TP/(TP + FN)
Specificity TN/(TN + FP)
Accuracy (TP + TN)/(TP + FP + FN + TN)
  1. FN false negative, FP false positive, TN true negative, TP true positive