Journal ArticleDOI
Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine
Greg Atkinson,Alan M. Nevill +1 more
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TLDR
It is recommended that sports clinicians and researchers should cite and interpret a number of statistical methods for assessing reliability and encourage the inclusion of the LOA method, especially the exploration of heteroscedasticity that is inherent in this analysis.Abstract:
Minimal measurement error (reliability) during the collection of interval- and ratio-type data is critically important to sports medicine research. The main components of measurement error are systematic bias (e.g. general learning or fatigue effects on the tests) and random error due to biological or mechanical variation. Both error components should be meaningfully quantified for the sports physician to relate the described error to judgements regarding ‘analytical goals’ (the requirements of the measurement tool for effective practical use) rather than the statistical significance of any reliability indicators.read more
Citations
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Comparison of the Reliability, Responsiveness, and Construct Validity of 4 Different Questionnaires for Evaluating Outcomes after Total Knee Arthroplasty
TL;DR: It was not possible to clearly identify a "best" or "better" tool and hence all can be considered useful, with the reported psychometric properties serving to guide the choice of instrument for a given purpose.
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Issues in the determination of 'responders' and 'non-responders' in physiological research.
TL;DR: The dichotomization of continuous‐level physiological measurements into ‘responder’ and ‘non‐responders’ when interventions/treatments are examined in robust parallel‐group studies is discussed.
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The reliability of portable fixed dynamometry during hip and knee strength assessments.
TL;DR: The portable fixed dynamometer showed good to high intrasession and intersession reliability values for hip and knee strength, except for hip internal rotation, which showed poor reliability.
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Effects of athletes’ muscle mass on urinary markers of hydration status
TL;DR: Usg specificity to detect hypohydration was reduced in athletes with large muscle mass, suggesting that athletes withLarge muscle mass are prone to be incorrectly classified as hypohydrated based on Usg.
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Validity and reliability of the 20 meter shuttle run test in military personnel.
TL;DR: The 20m SRT seems to be a reliable test, although validity is less certain, as relatively high variability was observed between measured and estimated VO2max from the 20 m SRT.
References
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Journal ArticleDOI
Statistical methods for assessing agreement between two methods of clinical measurement.
TL;DR: An alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability.
Book
Practical statistics for medical research
TL;DR: Practical Statistics for Medical Research is a problem-based text for medical researchers, medical students, and others in the medical arena who need to use statistics but have no specialized mathematics background.
Journal ArticleDOI
Statistical methods for assessing agreement between two methods of clinical measurement
TL;DR: In this article, an alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability, which is often used in clinical comparison of a new measurement technique with an established one.
Journal ArticleDOI
A concordance correlation coefficient to evaluate reproducibility.
TL;DR: A new reproducibility index is developed and studied that is simple to use and possesses desirable properties and the statistical properties of this estimate can be satisfactorily evaluated using an inverse hyperbolic tangent transformation.