Research Article
Ruling Out Brain CT Contraindications prior to Intravenous Thrombolysis: Diagnostic Equivalence between a Primary Interpretation Workstation and a Mobile Tablet Computer
Table 2
Equivalence tests for the distribution on the type of stroke classification between reading systems.
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SE: standard error of the mean difference, CI: confidence interval; Ho: null hypothesis, Ha: alternative hypothesis for testing equivalence, α: significance of the test (0.05), δ: difference of the means allowed to achieve equivalence, : test for difference of compared devices, that is, , H: retained hypothesis equivalence at δ level, “Ha” indicates equivalence achieved and “–” indicates fail to reject Ho., : δ required for equivalence (i.e., ). Ho: ; Ha: . comparison was calculated by six radiologists and two devices. |