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How good is the test ?

Sensitivity

TP/(TP+FN)

Specificity

TN/(FP+TN)

LR+

TP/FP

LR-

FN/TN

CT

60 % 80 % 3 : 1 1 : 2

FDG-PET

all stages

enlarged nodes

normal nodes

80 %

90 %

70 %

90 %

70 %

94 %

8 : 1

3 : 1

11 : 1

1 : 5

1 : 7

1 : 3

Mediastinoscopy

all stages

enlarged nodes

normal nodes

78 %

82 %

42 %

100 %

100 %

100 %

1 : 5

1 : 6

1 : 2

De Ruysscher R&O 2012