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dc.contributor.authorGijón-Noguerón, Gabriel 
dc.contributor.authorNdosi, Mwidimi
dc.contributor.authorLuque-Suárez, Alejandro 
dc.contributor.authorAlcacer-Pitarch, Begonya
dc.contributor.authorMunuera, Pedro Vicente
dc.contributor.authorGarrow, Adam
dc.contributor.authorRedmond, Anthony
dc.date.accessioned2013-09-05T06:44:41Z
dc.date.available2013-09-05T06:44:41Z
dc.date.issued2013-06-13
dc.identifier.urihttp://hdl.handle.net/10630/5684
dc.description.abstractBackground: The Manchester Foot Pain and Disability Index (MFPDI) is a self-assessment questionnaire developed in the UK to measure foot pain and disability in the general population1. It has been translated and validated in several languages 2,3 Objectives: The aim of this study was to conduct cross-cultural adaptation and validation of the MFPDI into Spanish Methods: The cross-cultural adaptation process was undertaken using International Society for Pharmacoeconomics and Outcomes Research (ISPOR)4 recommendations. This involved 8 stages: i) Forward translation, ii) Reconciliation, iii) Back translation, iv) Back translation review, v) Harmonisation, vi) Pilot, vii) Pilot review, and viii) Proofreading. In the validation phase, the MFPDI datasets from the UK (original) and Spain (adapted) were pooled and subjected to Rasch analysis. Fit to the Rasch model, unidimensionality, reliability and cross-cultural invariance is reported Results: The pooled dataset comprised 1015 patients (Spain n=333 and UK n=682) with characteristics summarised in Table 1. Rasch analysis confirmed three subscales for both the Spanish and UK datasets and fit to the Rasch model X2 (df) = 15.945 (12), p = 0.194 and 31.024 (21), p = 0.073, for Spain and UK . The reliability (Person Separation Index - PSI) was .85 and .82 for Spain and UK respectively. Significant cross-cultural non-invariance was present on the Functional and Personal appearance subscales. Adjustment for the bias was achieved by ‘splitting’ the affected subscales and creation of cultural-specific subscales for each country and cultural-general subscale. Fit to the Rasch model was satisfied following cross-cultural adjustment (Table 1). The MFPDI was calibrated into interval-level scales for Spain and UK to enable future data pooling or comparisons. Sampl e size Gender Age Item Fit Residual Person Fit Residual Chi Square Interaction PSI Analysis N Female (%) Mean (SD) Mean SD Mean SD Value (df) p Spain 333 248 (74.4) 51.6 (15.2) -0.164 3.07 - 0.364 0.93 15.95 (12) 0.19 0.85 UK 682 416 (61.0) 55.2 (16.7) -0.366 2.80 - 0.429 0.99 31.02 (21) 0.07 0.82 Pooled 1015 663 (65.4) 52.8 (15.8) -0.766 4.40 - 0.441 1.06 49.17 (27) 0.01 0.84 DIFAdjusted -0.420 2.98 - 0.415 0.98 57.94 (45) 0.09 0.84 Table 1: P = Χ2 interaction probability, (non-significant P = Fit to the model), PSI = Person separation index Conclusions: A gold standard translation process (ISPOR) has been used to develop a Spanish (for Spain) version of the MFPDI, a widely used foot-specific patient-reported outcome measure. Rasch analysis has confirmed that the MFPDI is a robust 3-subscale measure of foot pain, function and appearance in both its English and Spanish versions. Future work can make cross-cultural comparisons using the calibrated scaleses_ES
dc.language.isoenges_ES
dc.publisherEULARes_ES
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectPieses_ES
dc.subjectDolores_ES
dc.subject.otherManchester Foot Pain Disability Indexes_ES
dc.subject.otherRasch analysises_ES
dc.subject.othertranslationes_ES
dc.titlePSYCHOMETRIC CHARACTERISTICS OF A SPANISH TRANSLATION OF THE MANCHESTER FOOT PAIN AND DISABILITY INDEX: VALIDATION AND RASCH ANALYSISes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.centroFacultad de Ciencias de la Saludes_ES


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