title: The Japanese Orthopedic Association Back Pain Evaluation Questionnaire (JOABPEQ): A validation of the reliability of the Thai version.
abstract: BACKGROUND
  The Japanese Orthopedic Association Back Pain Evaluation Questionnaire (JOABPEQ) was developed by the Japanese Orthopedic Association (JOA) for assessment of lower back pain and lumbar spinal disease. We aimed to translate the JOABPEQ into Thai and test its reliability and validity in the Thai context.
  
  
  METHODS
  The original JOABPEQ was translated into Thai in accordance with international recommendations. Then 180 lumbar spinal disease patients (mean age 58.58 ± 11.97, 68.3% female) were asked to complete the Thai version of the JOABPEQ twice at 2-week intervals. Test-retest reliability was analyzed using the intra-class correlation coefficient (ICC). Internal consistencies were analyzed using Cronbach's alpha, while the construct validity was compared with the Thai version of the modified SF-36, and tested using the Spearman's rank correlation coefficient.
  
  
  RESULTS
  The Thai JOABPEQ showed satisfactory test-retest reliability in all parameters (Intra-class Correlation Coefficient 0.761-0.862). The variables low back pain, walking ability, social life function, and mental health had satisfactory internal consistency (the respective Cronbach's α was 0.798, 0.721, 0.707, and 0.795). Only the lumbar function parameter showed moderate reliability (Cronbach's α = 0.654). All of the variables in the Thai JOABPEQ had a statistically positive correlation with the correspondent Thai SF-36 subscales (Spearman's rank correlation p value < 0.05).
  
  
  CONCLUSIONS
  The Thai version of JOABPEQ had satisfactory internal consistency, test-retest reliability, and construct validity; it can be used as a reliable tool for assessing quality of life for lumbar spinal disease patients in Thailand.
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Thanate
authors: T
authors: Poosiripinyo
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand. Electronic address: permpa@kku.ac.th.
authors: Permsak
authors: P
authors: Paholpak
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Kitti
authors: K
authors: Jirarattanaphochai
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Weerachai
authors: W
authors: Kosuwon
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Winai
authors: W
authors: Sirichativapee
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Taweechok
authors: T
authors: Wisanuyotin
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Pat
authors: P
authors: Laupattarakasem
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Kamolsak
authors: K
authors: Sukhonthamarn
authors: Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors: Polasak
authors: P
authors: Jeeravipoolvarn
authors: Department of Spinal Surgery and Biomedical Engineering, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
authors: Toshihiko
authors: T
authors: Sakakibara
authors: Department of Spinal Surgery and Biomedical Engineering, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
authors: Yuichi
authors: Y
authors: Kasai
mesh_terms: D000328:Adult; D000368:Aged; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007564:Japan; D017116:Low Back Pain / Q000175:diagnosis*; D008159:Lumbar Vertebrae / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009985:Orthopedics / Q000592:standards; D011788:Quality of Life; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D012955:Societies, Medical / Q000592:standards*; D013122:Spinal Diseases / Q000175:diagnosis*; D011795:Surveys and Questionnaires; D013785:Thailand; D014177:Translations