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]

Values in brackets are 95% confidence interval