Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/110054
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dc.contributor.author | Welsh, A.H. | - |
dc.contributor.author | Knight, E.J. | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Medicine and Science in Sports and Exercise, 2015; 47(4):874-884 | - |
dc.identifier.issn | 0195-9131 | - |
dc.identifier.issn | 1530-0315 | - |
dc.identifier.uri | http://hdl.handle.net/2440/110054 | - |
dc.description.abstract | Purpose: We consider ‘‘magnitude-based inference’’ and its interpretation by examining in detail its use in the problem of comparing two means. Methods: We extract from the spreadsheets, which are provided to users of the analysis (http:// www.sportsci.org/), a precise description of how ‘‘magnitude-based inference’’ is implemented.We compare the implemented version of the method with general descriptions of it and interpret the method in familiar statistical terms. Results and Conclusions: We show that ‘‘magnitude-based inference’’ is not a progressive improvement on modern statistics. The additional probabilities introduced are not directly related to the confidence interval but, rather, are interpretable either as P values for two different nonstandard tests (for different null hypotheses) or as approximate Bayesian calculations, which also lead to a type of test. We also discuss sample size calculations associated with ‘‘magnitude-based inference’’ and show that the substantial reduction in sample sizes claimed for the method (30% of the sample size obtained from standard frequentist calculations) is not justifiable so the sample size calculations should not be used. Rather than using ‘‘magnitude-based inference,’’ a better solution is to be realistic about the limitations of the data and use either confidence intervals or a fully Bayesian analysis. | - |
dc.description.statementofresponsibility | Alan H. Welsh, Emma J. Knight | - |
dc.language.iso | en | - |
dc.publisher | American College of Sports Medicine | - |
dc.rights | © 2014 by the American College of Sports Medicine. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License, where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially. | - |
dc.source.uri | http://dx.doi.org/10.1249/mss.0000000000000451 | - |
dc.subject | Bayesian; Behrens-Fisher; confidence interval; frequentist | - |
dc.title | "Magnitude-based inference": a statistical review | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1249/mss.0000000000000451 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Knight, E.J. [0000-0002-4549-1531] | - |
Appears in Collections: | Aurora harvest 8 Public Health publications |
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File | Description | Size | Format | |
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hdl_110054.pdf | Published version | 2.7 MB | Adobe PDF | View/Open |
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