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Classification Performance of Serum S100β in Detecting Intracranial Lesions on CT in the Presence of Extracranial Fractures
| CT positive | CT negative | |||
|---|---|---|---|---|
| Sensitivity | 100% (63–100) | |||
| S100β positive >0.020 ng/mL | 9 | 74 | Specificity | 5% (2–13) |
| S100β negative ≤0.020 ng/mL | 0 | 4 | NPV | 100% (40–100) |
| PPV | 11% (5–20) |
GFAP, glial fibrillary acidic protein; CT, computed tomography; NPV, negative predictive value; PPV, positive predictive value.
