title: Validation of the multimedia version of the RDC/TMD axis II questionnaire in Portuguese.
abstract: OBJECTIVE
  The aim of the study was to validate the multimedia version of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axis II Questionnaire in Portuguese language.
  
  
  METHODS
  The sample comprised 30 patients with signs and symptoms of temporomandibular disorders (TMD), evaluated at the Orofacial Pain Control Center of the Dental School of the University of Pernambuco, Brazil, between April and June 2006. Data collection was performed using the following instruments: Simplified Anamnestic Index (SAI) and RDC/TMD Axis II written version and multimedia version. The validation process consisted of analyzing the internal consistency of the scales. Concurrent and convergent validity were evaluated by the Spearman's rank correlation. In addition, test and analysis of reproducibility by the Kappa weighted statistical test and Spearman's rank correlation test were performed.
  
  
  RESULTS
  The multimedia version of the RDC/TMD Axis II questionnaire in Portuguese was considered consistent (Crombrach alpha = 0.94), reproducible (Spearman 0.670 to 0.913, p<0.01) and valid (p<0.01).
  
  
  CONCLUSIONS
  The questionnaire showed valid and reproducible results, and represents an instrument of practical application in epidemiological studies of TMD in the Brazilian population.
authors.affiliation: Dental School, University of Pernambuco, Camaragibe, PE, Brazil.
authors.forename: Ricardo Figueiredo
authors.initials: RF
authors.lastname: Cavalcanti
authors.forename: Luciana Moraes
authors.initials: LM
authors.lastname: Studart
authors.forename: Maurício
authors.initials: M
authors.lastname: Kosminsky
authors.forename: Paulo Sávio Angeiras
authors.initials: PS
authors.lastname: de Goes
mesh_terms: D000328:Adult; D001938:Brazil; D002908:Chronic Disease; D003863:Depression / Q000523:psychology; D004522:Educational Status; D005157:Facial Pain / Q000175:diagnosis / Q000523:psychology; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D007802:Language; D008297:Male; D008334:Mandible / Q000503:physiopathology; D017533:Marital Status; D008875:Middle Aged; D019212:Multimedia; D010147:Pain Measurement; D011446:Prospective Studies; D016059:Range of Motion, Articular / Q000502:physiology; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000145:classification; D013704:Temporomandibular Joint / Q000503:physiopathology; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000523:psychology; D014956:Writing; D055815:Young Adult