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Knowledge about dietary fibres (KADF): development and validation of an evaluation instrument through structural equation modelling (SEM)

2016Journal article Restricted access
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dc.contributor.authorGuiné, Raquel
dc.contributor.authorDuarte, J.
dc.contributor.authorFerreira, M.
dc.contributor.authorCorreia, P.
dc.contributor.authorLeal, M.
dc.contributor.authorRumbak, I.
dc.contributor.authorBarić, I.C.
dc.contributor.authorKomes, D.
dc.contributor.authorSatalić, Z.
dc.contributor.authorSarić, M.M.
dc.contributor.authorTarcea, M.
dc.contributor.authorFazakas, Z.
dc.contributor.authorJovanoska, D.
dc.contributor.authorVanevski, D.
dc.contributor.authorVittadini, E.
dc.contributor.authorPellegrini, N.
dc.contributor.authorSzűcs, V.
dc.contributor.authorHarangozó, J.
dc.contributor.authorEL-Kenawy, A.
dc.contributor.authorEL-Shenawy, O.
dc.contributor.authorYalçın, E.
dc.contributor.authorKösemeci, C.
dc.contributor.authorKlava, D.
dc.contributor.authorStraumite, E.
dc.date.accessioned2016-09-20T10:37:56Z
dc.date.available2016-09-20T10:37:56Z
dc.date.issued2016
dc.description.abstractObjectives: Because there is scientific evidence that an appropriate intake of dietary fibre should be part of a healthy diet, given its importance in promoting health, the present study aimed to develop and validate an instrument to evaluate the knowledge of the general population about dietary fibres. Study design: The present study was a cross sectional study. Methods: The methodological study of psychometric validation was conducted with 6010 participants, residing in ten countries from 3 continents. The instrument is a questionnaire of self-response, aimed at collecting information on knowledge about food fibres. For exploratory factor analysis (EFA) was chosen the analysis of the main components using varimax orthogonal rotation and eigenvalues greater than 1. In confirmatory factor analysis by structural equation modelling (SEM) was considered the covariance matrix and adopted the Maximum Likelihood Estimation algorithm for parameter estimation. Results: Exploratory factor analysis retained two factors. The first was called Dietary Fibre and Promotion of Health (DFPH) and included 7 questions that explained 33.94 % of total variance ( = 0.852). The second was named Sources of Dietary Fibre (SDF) and included 4 questions that explained 22.46% of total variance ( = 0.786). The model was tested by SEM giving a final solution with four questions in each factor. This model showed a very good fit in practically all the indexes considered, except for the ratio 2/df. The values of average variance extracted (0.458 and 0.483) demonstrate the existence of convergent validity; the results also prove the existence of discriminant validity of the factors (r2 = 0.028) and finally good internal consistency was confirmed by the values of composite reliability (0.854 and 0.787). Conclusions: This study allowed validating the KADF scale, increasing the degree of confidence in the information obtained through this instrument in this and in future studies.pt_PT
dc.identifier.citationGuiné RPF, Duarte J, Ferreira M, Correia P, Leal M, Rumbak I, Barić IC, Komes D, Satalić Z, Sarić MM, Tarcea M, Fazakas Z, Jovanoska D, Vanevski D, Vittadini E, Pellegrini N, Szűcs V, Harangozó J, EL-Kenawy A, EL-Shenawy O, Yalçın E, Kösemeci C, Klava D, Straumite E. (2016) Knowledge about dietary fibres (KADF): development and validation of an evaluation instrument through structural equation modelling (SEM). Public Health, 138, 108-118.pt_PT
dc.identifier.doi10.1016/j.puhe.2016.03.031pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/3351
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectDietary fibrept_PT
dc.subjectfactor analysispt_PT
dc.subjectknowledge about fibrespt_PT
dc.subjectstructural equation modellingpt_PT
dc.subjectscale validationpt_PT
dc.subjectsurveypt_PT
dc.titleKnowledge about dietary fibres (KADF): development and validation of an evaluation instrument through structural equation modelling (SEM)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage118pt_PT
oaire.citation.startPage108pt_PT
oaire.citation.titlePublic Healthpt_PT
oaire.citation.volume138pt_PT
person.familyNamede Pinho Ferreira Guiné
person.givenNameRaquel
person.identifierhttps://scholar.google.pt/citations?user=abFDovIAAAAJ&hl=pt-PT
person.identifier.ciencia-id8B13-5492-0F23
person.identifier.orcid0000-0003-0595-6805
person.identifier.scopus-author-id6603138390
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication59580952-77cc-4e4e-ae90-527a8b994f9f
relation.isAuthorOfPublication.latestForDiscovery59580952-77cc-4e4e-ae90-527a8b994f9f

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