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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

From: Value of copeptin and the S-100b protein assay in ruling out the diagnosis of stroke-induced dizziness pattern in emergency departments

  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]
  1. Values in brackets are 95% confidence interval