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New unitary metrics for dementia test accuracy studies
Author(s) -
Larner Andrew J
Publication year - 2019
Publication title -
progress in neurology and psychiatry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.19
H-Index - 12
eISSN - 1931-227X
pISSN - 1367-7543
DOI - 10.1002/pnp.543
Subject(s) - unitary state , test (biology) , dementia , fragility , cognition , cognitive test , psychology , cognitive impairment , cognitive psychology , medicine , psychiatry , pathology , disease , political science , paleontology , law , chemistry , biology
Diagnostic test accuracy studies generally present results in terms of the sensitivity, specificity, and predictive values of the test being examined. Although these metrics are familiar, they may be difficult to interpret and apply to individual patients. This article briefly presents some new easily calculated unitary metrics and compares them for some commonly used cognitive screening instruments and neurological signs used to assess cognitive status, highlighting the underlying weakness or ‘fragility’ of these tests.