spectrum bias


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spectrum bias

Variation in the performance of a diagnostic test due to its application to people of differing ages, genders, nationalities, or specific disease manifestations. A test's sensitivity and specificity may increase or decrease, depending on the population to which it is applied.
Synonym: case-mix bias
References in periodicals archive ?
This information is important for assessment of spectrum bias as shown in Figure 2.
Information about severity of disease (eg, lesion size, stage) would be helpful for assessing possible spectrum bias.
Because some patients with acute flank pain were not referred for CT, this introduces a spectrum bias.
Similarly, an analogous plot was used to identify spectrum bias.
A similar plot was used to examine the group of studies for possible spectrum bias.
When assessing a screening test, we need to know the sensitivity and specificity in the population to be screened to avoid spectrum bias.
Because of the likelihood of spectrum bias, this is not an ideal sample.
Spectrum bias in musculoskeletal medicine: how we can disagree and both be right?
With differences as large as this, the influence of spectrum bias on the results might need to be considered.
3) quantified the effect of spectrum bias, which arises when clinicians enroll very ill patients and compare their results with those from healthy controls.
The metaanalysis focused the appraisal of study quality on the potential for differential reference standard bias (10) and spectrum bias (11).
The effect of spectrum bias on the utility of magnetic resonance imaging and evoked potentials in the diagnosis of suspected multiple sclerosis.
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