Table 2 Contingency table and performance values of the 14-3-3 test in a population of clinically suspected sCJD cases
From: Impact of the clinical context on the 14-3-3 test for the diagnosis of sporadic CJD
All cases,n = 672 | |||
|---|---|---|---|
Final diagnosis | sCJD f | non-sCJD f | |
14-3-3 result | Pos. | 155 [67] | 15 |
Neg. | 22 [8] | 480 | |
Performance values (%) | |||
PPV | 91.2 (85.6–94.8) | ||
NPV | 95.6 (93.3–97.2) | ||
Sensitivity | 87.6 (81.6–91.9) | ||
Specificity | 96.9 (94.9–98.2) | ||
Efficiency | 94.5 (92.5–96.0) | ||
Prevalence | 26.3 (23.2–29.8) | ||