Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Contingency table—S-100B concentrations and MRI findings
| S-100B findings | MRI positive | MRI negative | PPV and NPV |
|---|---|---|---|
| S-100B positive | 5 (12) | 27 (66) | PPV 16% |
| S-100B negative | 0 (0) | 9 (22) | NPV 100% |
| Sensitivity 100% | Specificity 25% |
NPV, negative-predictive value; ppv positive-predictive value.
Data are number (%) of patients.
