Abstract 291
Caucasians
Non Caucasians
All patients
Sensitivity
85 %
89 %
88 %
Specificity
61 %
36 %
49 %
Positive predictive value - PPV
45 %
62 %
57 %
Negative predictive value - NPV
91 %
75 %
85 %
Prevalence
27 %
54 %
43 %