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Validity and reliability of the portuguese version of Mandibular Function Impairment Questionnaire

dc.contributor.authorCampos, Juliana Alvares Duarte Bonini
dc.contributor.authorCarrascosa, Andréa Corrêa
dc.contributor.authorMaroco, João
dc.date.accessioned2013-09-21T10:36:04Z
dc.date.available2013-09-21T10:36:04Z
dc.date.issued2012
dc.description.abstracthe aim of this study is to evaluate the validity and reliability of the Mandibular Function Impairment Questionnaire (MFIQ) (Portuguese version). Face and content validity of the Portuguese version were performed. To assess reproducibility of the data gathered with MFIQ, it was applied to 62 individuals who completed the questionnaire on two occasions. Validity and reliability of the data gathered with MFIQ were evaluated in a sample of 249 patients. Construct-related validity was assessed through factorial validity (by means of a confirmatory factor analysis), and convergent and discriminant validities were assessed, respectively, by the average variance extracted (AVE), composite reliability (CC) and bivariate correlations between factors. The internal consistency was estimated by the standardised Cronbachs alpha coefficient (a) and reproducibility by the intra-class correlation coefficient (ICC). All the items of MFIQ showed content validity. Reproducibility was excellent in both the functional capacity dimension (D1) (ICCD1 = 0.895, 95% CI = 0.832 to 0.935) and the feeding dimension (D2) (ICCD2 = 0.825, 95% CI = 0.726 to 0.891). Items 1, 2, 6 and 7 of D1 had factor weights below the desired cut-off (0.5), and overall fit of the original bifactorial structure of the MFIQ was poor [(confirmatory fit index) CFI = 0.850, (goodness of fit index) GFI = 0.781, (root mean square error of approximation) RMSEA = 0.118]. Thus, these items were excluded, and the new, reduced version of the MFIQ showed good fit (CFI = 0.933, GFI = 0.879, RMSEA = 0.099). The convergent validity was adequate (AVE = 0.5, CC = 0.7) for both factors. However, their discriminant validity was low (AVED1 = 0.51 and AVED2 = 0.66 < ?2D1D2 = 0.70). The internal consistency was excellent (aD1 = 0.874; aD2 = 0.918). The Portuguese version of the reduced MFIQ produced data with good validity and reliability.por
dc.identifier.citationJournal of Oral Rehabilitation, 39, 377-383por
dc.identifier.issn0305-182X
dc.identifier.urihttp://hdl.handle.net/10400.12/2372
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-Blackwellpor
dc.subjectReliabilitypor
dc.subjectValiditypor
dc.subjectMandibular Function Impairment Questionnairepor
dc.subjectTemporomandibular joint disorderspor
dc.titleValidity and reliability of the portuguese version of Mandibular Function Impairment Questionnairepor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceMaldenpor
oaire.citation.endPage383por
oaire.citation.startPage377por
oaire.citation.titleJournal of Oral Rehabilitationpor
oaire.citation.volume39por
rcaap.rightsembargoedAccesspor
rcaap.typearticlepor

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