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dc.contributor.authorVakhitova, Zarina I
dc.contributor.authorAlston-Knox, Clair L
dc.date.accessioned2019-05-29T12:39:45Z
dc.date.available2019-05-29T12:39:45Z
dc.date.issued2018
dc.identifier.issn1932-6203
dc.identifier.doi10.1371/journal.pone.0205076
dc.identifier.urihttp://hdl.handle.net/10072/381412
dc.description.abstractIn the context of generalized linear models (GLMs), interactions are automatically induced on the natural scale of the data. The conventional approach to measuring effects in GLMs based on significance testing (e.g. the Wald test or using deviance to assess model fit) is not always appropriate. The objective of this paper is to demonstrate the limitations of these conventional approaches and to explore alternative strategies for determining the importance of effects. The paper compares four approaches to determining the importance of effects in the GLM using 1) the Wald statistic, 2) change in deviance (model fitting criteria), 3) Bayesian GLM using vaguely informative priors and 4) Bayesian Model Averaging analysis. The main points in this paper are illustrated using an example study, which examines the risk factors for cyber abuse victimization, and are further examined using a simulation study. Analysis of our example dataset shows that, in terms of a logistic GLM, the conventional methods using the Wald test and the change in deviance can produce results that are difficult to interpret; Bayesian analysis of GLM is a suitable alternative, which is enhanced with prior knowledge about the direction of the effects; and Bayesian Model Averaging (BMA) is especially suited for new areas of research, particularly in the absence of theory. We recommend that social scientists consider including BMA in their standard toolbox for analysis of GLMs.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherPublic Library of Sciences
dc.publisher.placeUnited States
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto32
dc.relation.ispartofissue11
dc.relation.ispartofjournalPLoS One
dc.relation.ispartofvolume13
dc.subject.fieldofresearchStatistical Theory
dc.subject.fieldofresearchcode010405
dc.titleNon-significant p-values? Strategies to understand and better determine the importance of effects and interactions in logistic regression
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionPublished
gro.facultyArts, Education & Law Group, School of Criminology and Criminal Justice
gro.rights.copyright© 2018 Vakhitova, Alston-Knox. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
gro.hasfulltextFull Text
gro.griffith.authorVakhitova, Zarina I.
gro.griffith.authorAlston-Knox, Clair L.


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