title: Cross-Cultural Adaptation of the Profile Fitness Mapping Neck Questionnaire to Brazilian Portuguese: Internal Consistency, Reliability, and Construct and Structural Validity.
abstract: The purpose of this study was to adapt and evaluate the psychometric properties of the ProFitMap-neck to Brazilian Portuguese.
  
  
  
  The cross-cultural adaptation consisted of 5 stages, and 180 female patients with chronic neck pain participated in the study. A subsample (n = 30) answered the pretest, and another subsample (n = 100) answered the questionnaire a second time. Internal consistency, test-retest reliability, and construct validity (hypothesis testing and structural validity) were estimated. For construct validity, the scores of the questionnaire were correlated with the Neck Disability Index (NDI), and the Hospital Anxiety and Depression Scale (HADS), the Tampa Scale of Kinesiophobia (TSK), and the 36-item Short-Form Health Survey (SF-36).
  
  
  
  Internal consistency was determined by adequate Cronbach's α values (α > 0.70). Strong reliability was identified by high intraclass correlation coefficients (ICC > 0.75). Construct validity was identified by moderate and strong correlations of the Br-ProFitMap-neck with total NDI score (-0.56 <R < -0.71) and with the SF-36, HADS-anxiety, HADS-depression, and TSK (-0.32 <R < -0.82). Exploratory factor analysis revealed 2 factors for the Symptom scale: intensity index and the Function scale. Symptom scale-frequency index identified 1 factor. Structural validity was determined by percentage of cumulative variance >50%, Kaiser-Meyer-Olkin index > 0.50, eigenvalue > 1, and factor loadings > 0.2.
  
  
  
  Br-ProFitMap-neck had adequate psychometric properties and can be used in clinical settings, as well as research, in patients with chronic neck pain.
authors.affiliation: Department Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.
authors.forename: Mariana Cândido
authors.initials: MC
authors.lastname: Ferreira
authors.affiliation: Centre for Musculoskeletal Research, Department of Occupational and Public Health Sciences. Faculty of Health and Occupational Studies, University of Gävle, Gävle, Sweden; Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden.
authors.forename: Martin
authors.initials: M
authors.lastname: Björklund
authors.affiliation: Headache Clinic, Department of Neurosciences and Behavioral Sciences, School of Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.
authors.forename: Fabiola
authors.initials: F
authors.lastname: Dach
authors.affiliation: Department of Neurosciences and Behavioral Sciences, Post Graduation Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil. Electronic address: chavestc@fmrp.usp.br.
authors.forename: Thais Cristina
authors.initials: TC
authors.lastname: Chaves
mesh_terms: D000328:Adult; D001938:Brazil / Q000453:epidemiology; D059350:Chronic Pain / Q000175:diagnosis* / Q000208:ethnology / Q000503:physiopathology; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008875:Middle Aged; D019547:Neck Pain / Q000175:diagnosis* / Q000208:ethnology / Q000503:physiopathology; D011174:Portugal / Q000208:ethnology; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Neck Pain; Patient Outcome Assessment; Reproducibility of Results; Validity of Results