نتایج جستجو برای: diagnostic ratios
تعداد نتایج: 410992 فیلتر نتایج به سال:
OBJECTIVE The diagnostic accuracy of cerebrospinal fluid (CSF) biomarkers for Alzheimer's disease (AD) must be improved before widespread clinical use. This study aimed to determine whether CSF Aβ42/Aβ40 and Aβ42/Aβ38 ratios are better diagnostic biomarkers of AD during both predementia and dementia stages in comparison to CSF Aβ42 alone. METHODS The study comprised three different cohorts (n...
BACKGROUND There is considerable overlap between left ventricular noncompaction (LVNC) and other cardiomyopathies. LVNC has been reported in up to 40% of the general population, raising questions about whether it is a distinct pathological entity, a remodeling epiphenomenon, or merely an anatomical phenotype. OBJECTIVES The authors determined the prevalence and predictors of LVNC in a healthy...
The epidemiological problem of detection bias occurs when the evidence needed to diagnose a particular dis ease is sought more intensively in the group of people exposed to a particular agent than in the comparative group, who did not receive the agent. The bias can occur during community surveillance before hospitalization, during the ordering of diagnostic tests for hospitalized patients, or ...
Evidence-based medicine encourages the use of quantitative diagnostic test results to estimate the probability of a particular diagnosis. Likelihood ratios (LRs) are among the best tools for maximizing the diagnostic information gained from diagnostic assays that provide results on a continuous scale. They provide the odds that an animal with a particular test result actually has the disease in...
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