title: [Validation and cultural adaptation of the Chilean version of the Roland-Morris Disability Questionnaire].
abstract: BACKGROUND
  The evaluation of disability is highly relevant for the study and clinical follow-up of pain. Reliable and culturally valid instruments are required for this purpose.
  
  
  OBJECTIVE
  To adapt and to validate the Roland-Morris Disability Questionnaire (RDQ) to measure disability in low back pain Chilean patients and to study the psychometric properties of an abbreviated six item version of this instrument.
  
  
  METHODS
  The instrument's original version was translated and back translated into Spanish, and specialists ensured the cultural validation to Chile. Disability mental health using the Goldberg General Health Questionnaire (GHQ-12) and pain using a visual analogue scale (VAS) were evaluated in 206 patients, during a medical appointment due to acute low back pain.
  
  
  RESULTS
  The Chilean version of the original 24-item RDQ and the new six item version showed adequate internal consistency. The short version also showed a good convergent validity. It had the same pattern of correlations with VAS and GHQ-12 scales, as the original 24 item scale. Greater disability was associated with higher pain intensity and poorer mental health. The construct validity analysis identified one factor, for both versions of the RDQ.
  
  
  CONCLUSIONS
  The adapted Chilean version of the original RDQ is a reliable and valid questionnaire, as well as the new abbreviated six items version, which showed adequate psychometric properties.
authors.forename: Eliana
authors.initials: E
authors.lastname: Guic
authors.forename: Susan
authors.initials: S
authors.lastname: Galdames
authors.forename: Policarpo
authors.initials: P
authors.lastname: Rebolledo
mesh_terms: D000293:Adolescent; D000328:Adult; D002677:Chile; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D006233:Persons with Disabilities; D006801:Humans; D017116:Low Back Pain / Q000175:diagnosis*; D008875:Middle Aged; D009784:Occupational Diseases / Q000175:diagnosis; D010147:Pain Measurement; D011594:Psychometrics; D011795:Surveys and Questionnaires; D014177:Translations; D055815:Young Adult