The positive test
Sensitivity
Specificity
Accuracy
PPV at pretest probability=
NPV at pretest probability=10%
50%
90%
s.HLA-G
100.0
52.6
66.7
67.9
95.0
100.0
Anti-Elastase
100.0
36.8
55.6
61.3
93.4
100.0
Anti-Cathepsin-G
43.8
94.7
79.6
89.3
98.7
93.8
Table 7:
Validity parameters for selected serum antibodies when used as test to diagnose CD differentiating it to UC.