test-retest reliability

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test-re·test re·li·a·bil·i·ty

in psychology, the consistency of measurement based on the correlation between test and retest scores for the same subject.
See also: coefficient, reliability.
Farlex Partner Medical Dictionary © Farlex 2012

test-retest reliability

Psychology A measure of the ability of a psychologic testing instrument to yield the same result for a single Pt at 2 different test periods, which are closely spaced so that any variation detected reflects reliability of the instrument rather than changes in the Pt's status. Cf Interrater reliability Stastistics The correlation between the 1st and 2nd test of a number of subjects. See Reliability.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

test-retest reliability

The ability of a test to produce consistent results when it is used multiple times under nearly equivalent conditions. A test whose results fluctuate minimally when it is reused is said to have good test-retest reliability.
See also: reliability
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
However, absolute test-retest reliability of measurements expressed as either the standard error of measurement (SEM) or minimal detectable change (MDC) and concurrent validity of this device compared with a gold-standard strength assessment tool expressed as Intra-class Correlation Coefficient (ICC) has not been reported in literature.
Test-retest reliability is used to measure the power of a measurement tool to give consistent results for repeated applications.
After administering the MCLHB-DRR scale to 34 individuals, within 2 to 3 weeks, the individuals were reevaluated to assess the test-retest reliability.
A good validity, diagnostic accuracy, and test-retest reliability was achieved, making the COMQ-12 a useful tool in clinical evaluation studies to assess the impact of surgery on patient's complaints [5].
The aim of this study was to translate the COMQ-12 questionnaire into Turkish, evaluate the internal consistency of the test, test-retest reliability, and validate the adaptation for further use into studies in Turkish.
To assess the test-retest reliability of the PDQ-8, it was filled out two times with one-week interval by randomly selected 24 participants from the same study sample.
Test-retest reliability was assessed by computing the correlation between Visits 1 and 2 scores.
The results of the Test-Retest study for 18F-PI-2620 in AD and non-demented controls, or NDC, demonstrated favorable kinetics, high target specificity with low off-target binding and high signal in regions of expected tau pathology.
For the test-retest reliability, intraclass correlation coefficients (ICC) were calculated.
The aim of the present study was to explore psychometric properties such as construct validity, convergent validity, test-retest reliability and internal consistency reliability of the TIS, which is used to evaluate trunk control in NMD.
(19) However, the VAS has only fair test-retest reliability (ICC=0.48).