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Table 4 Sensitivity (Sen), specificity (Spec), accuracy, PPV, and NPV of PET/CT in detection of recurrent disease in G2, n = 11 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

8

2

1

0

11

6.273*

0.043*

%

72.72

18.18

9.09

0

100

ROC

PET/CT

Sens

Spec

PPV

NPV

Accuracy

 

100

66.66

88.88

100

90.90

  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. *Significant