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Vortest-Wahrscheinlichkeit - Bildgebung - Nachtest-Wahrscheinlichkeit: Wen kümmert das?


Steurer, J (2009). Vortest-Wahrscheinlichkeit - Bildgebung - Nachtest-Wahrscheinlichkeit: Wen kümmert das? Therapeutische Umschau, 66(1):5-7.

Abstract

The accuracy of a diagnostic test, i.e. abdomen ultrasound in patients with suspected acute appendicitis, is described in the terms of sensitivity and specificity. According to eminent textbooks physicians should use the values of the sensitivity and specificity of a test in their diagnostic reasoning. Physician's estimate, after taking the history, the pretest-probability of the suspected illness, order one or more tests and then calculate the respective posttest-probability. In practice physicians almost never follow this line of thinking. The main reasons are; to estimate concrete illness probabilities is difficult, the values for the sensitivity and specificity of a test are most often not known by physicians and calculations during daily practice are intricate. Helpful for busy physicians are trustworthy expert recommendations which test to apply in which clinical situation.

Abstract

The accuracy of a diagnostic test, i.e. abdomen ultrasound in patients with suspected acute appendicitis, is described in the terms of sensitivity and specificity. According to eminent textbooks physicians should use the values of the sensitivity and specificity of a test in their diagnostic reasoning. Physician's estimate, after taking the history, the pretest-probability of the suspected illness, order one or more tests and then calculate the respective posttest-probability. In practice physicians almost never follow this line of thinking. The main reasons are; to estimate concrete illness probabilities is difficult, the values for the sensitivity and specificity of a test are most often not known by physicians and calculations during daily practice are intricate. Helpful for busy physicians are trustworthy expert recommendations which test to apply in which clinical situation.

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Additional indexing

Other titles:Pre-test and post-test probabilities. Who cares?
Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic and Policlinic for Internal Medicine
Dewey Decimal Classification:610 Medicine & health
Language:German
Date:2009
Deposited On:03 Feb 2009 14:12
Last Modified:05 Apr 2016 12:56
Publisher:Hans Huber
ISSN:0040-5930
Publisher DOI:https://doi.org/10.1024/0040-5930.66.1.5
PubMed ID:19105149

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