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Table 7 Sensitivity, specificity, accuracy, PPV, and NPV of PET/CT in detection of distant metastasis of G3, n = 18 melanoma patients

From: PET/CT in restaging, prognosis, and recurrence in patients with malignant melanoma

  Malignant melanoma Chi-square
TP TN FP FN Total χ2 FEP value
PET/CT n 15 2 1 0 18 11.224* 0.002*
% 83.33 5.55 11.11 0 100
ROC PET/CT Sens Spec PPV NPV Accuracy  
100 66.66 93.75 100 94.44
  1. TP true +ve, FN false −ve, TN true −ve, FP false +ve, PPV positive predictive value, NPV negative predictive value, χ2 chi-square test, FE Fisher Exact, P P value for comparing between the two studied groups
  2. *Statistically significant at P ≤ 0.05