title: Reliability of the Roland - Morris Disability Questionnaire (Thai version) for the evaluation of low back pain patients.
abstract: OBJECTIVE
  To determine the reliability of the Thai version of the Roland - Morris disability questionnaire in low back pain patients.
  
  
  METHODS
  To develop Thai version of the Roland - Morris disability questionnaire and test it in 120 low back pain patients. Reliability of the Thai version of the Roland - Morris disability questionnaire was assessed by internal consistency using Cronbach's alpha coefficient.
  
  
  RESULTS
  The overall Cronbach's alpha coefficient of the scale was 0.83. The Cronbach's alpha coefficient of each question in the Thai version of the Roland - Morris disability questionnaire exceeded 0.7 (range, 0.71- 0.93). The Cronbach's alpha coefficient tested in acute or chronic low back pain patients whether they have back pain only or back pain with radiculopathy which also exceeded 0.7 (range, 0.83-0.87).
  
  
  CONCLUSIONS
  The Thai version of the Roland - Morris disability questionnaire is a reliable tool for assessing functional disability of low back pain in Thai patients.
authors.affiliation: Department of Orthopaedics, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand. kitjir@kku.ac.th
authors.forename: Kitti
authors.initials: K
authors.lastname: Jirarattanaphochai
authors.forename: Surachai
authors.initials: S
authors.lastname: Jung
authors.forename: Chat
authors.initials: C
authors.lastname: Sumananont
authors.forename: Sukit
authors.initials: S
authors.lastname: Saengnipanthkul
mesh_terms: D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D017116:Low Back Pain; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D013785:Thailand