Table 2 Diagnostic values of copeptin and S100 protein, alone or in combination, to ruling out stroke as the main cause of a new episode of dizziness
Sensitivity | Specificity | Positive predictive value | Negative predictive value | |
|---|---|---|---|---|
Copeptin | 0.77 [0.50–0.91] | 0.50 [0.49–0.58] | 0.14 [0.08–0.24] | 0.93 [0.87–0.98] |
S100 protein | 0.54 [0.29–0.77] | 0.97 [0.92–0.99] | 0.64 [0.35–0.84] | 0.95 [0.90–0.98] |
Both | 1 [0.77–1] | 0.48 [0.40–0.57] | 0.14 [0.11–0.27] | 1 [0.94–1] |