Table 1.

Sensitivity and positive predictive value for acute stroke in the Danish Stroke Registry and the Danish National Registry of Patients in Denmark, 2009

Registry	Verified positive/total positive by gold standard	Sensitivity % (worst/best case scenario)*	Verified positive/total positive by registry	PPV % (worst/best case scenario)*
Danish Stroke Registry	9,671/10,015	97 (92–99)	9,671/10,707	90 (72–98)
Danish National Registry of Patients	7,877/10,015	79 (73–84)	7,877/10,000	79 (62–88)

Notes:

^*Reflects sensitivity analyses.

Abbreviation: PPV, positive predictive value.