diagnostic specificity


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Related to diagnostic specificity: diagnostic sensitivity

di·ag·nos·tic spec·i·fic·i·ty

the probability (P) that, given the absence of disease (D), a normal test result (T) excludes disease; that is, P(T/D).
Farlex Partner Medical Dictionary © Farlex 2012

di·ag·nos·tic spe·ci·fi·ci·ty

(dī-ăg-nos'tik spes'i-fis'i-tē)
1. The probability (P) that, given the absence of disease (D), a normal test result (T) excludes disease; i.e., P(T/D).
2. Specificity (%) = number of patients without the disease who test negative × 100 ÷ total number tested without the disease.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

diagnostic specificity

For a diagnostic or screening test, the proportion of people who are truly free of a specific disease and are so identified by the test.
See: sensitivity
See also: specificity
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
(12), who reported 93% diagnostic sensitivity, 71% diagnostic specificity, and 90% efficiency for THC detection in suspected drugged drivers, employing the 5-[micro]g/L DrugTest 5000 and 2-[micro]g/L plasma THC confirmation cutoffs in simultaneously collected samples (n = 48).
This group reduced the diagnostic specificity of using the 99th-percentile value alone.
The high levels of diagnostic specificity of our PCPs, the degree of actual agreement with ratings by psychiatrists and a fair Kappa coefficient are remarkable when compared with other studies.
Even with these proposed changes, diagnostic specificity still derived mainly from radiographic and serologic data.
Before we had mood stabilizers, we used them to treat both schizophrenia and bipolar disorder, so there was not even diagnostic specificity, much less specificity at a chemical level.
(14) The presence of RF in so many other conditions decreases the diagnostic specificity of the RF test, resulting in the search for a more specific test for the diagnosis of RA.
A possible solution is to evaluate criteria B, C, and D for diagnostic specificity to differentiate PTSD from other mood and anxiety disorders.
This new test for appendicitis will provide clinicians with a rapid, non-invasive assay that is easy to administer, has high diagnostic specificity and can potentially reduce unnecessary hospitalizations and surgeries.
Such an approach "undervalues the diagnostic specificity of the cutaneous changes of dermatomyositis" and underemphasizes the profound clinical impact of cutaneous inflammation on patients' quality of life, he said.
Predictive values include: (a) diagnostic sensitivity (percent of individuals with the disease who test positive by the assay), (b) diagnostic specificity (percent of individuals without the disease who test negative by the assay), (c) diagnostic efficiency (percent of all test results that are either true positives or true negatives), (d) positive predictive value (percent of all positive test results that are true positives), and (e) negative predictive value (percent of all negative test results that are true negatives).
The advantages of cardiac specificity were realized soon after the clinical trials started, but an unexpected finding, increases of cTnT and cTnI that occurred "too early" in patients without traditional diagnostic criteria of AMI, was initially believed to compromise the biomarkers' diagnostic specificity. Further clinical studies established the real cause of these findings: minor myocardial damage.

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