title: The predictive validity of OMPQ on the rehabilitation outcomes for patients with acute and subacute non-specific LBP in a Chinese population.
abstract: BACKGROUND
  Early screening of physical and psychosocial risk factors has been advocated as a way to identify low back pain (LBP) patients who may develop chronic disability. This study evaluated the predictive validity of a Chinese version of the Orebro Musculoskeletal Pain Questionnaire (OMPQ) in identifying LBP patients at risk of developing poor return-to-work (RTW) outcomes.
  
  
  METHODS
  Altogether 241 patients with acute or subacute non-specific LBP agreed to participate, and they were screened at baseline with OMPQ, and evaluated after discharge from physiotherapy (n = 173) with outcome measures including the Roland-Morris Disability Questionnaire (RMDQ), numerical pain score (0-10) and global recovery (0-10). At 1-year follow-up, information on RTW status as well as sick leave duration were obtained.
  
  
  RESULTS
  At baseline the OMPQ had a mean score of 112.0 (SD = 26.5). The receiver operator characteristic (ROC) curves of OMPQ scores at 1-year follow-up recorded values of area under the curve of 0.693 for RTW and 0.714 for sick leave duration, which are comparable to those reported in European studies. OMPQ was the only factor that could significantly predict the RTW outcomes, compared to other variables such as the RMDQ scores.
  
  
  CONCLUSIONS
  The results confirmed the predictive validity of the Chinese version of OMPQ in screening LBP patients at risk of developing poor occupational outcomes, and appropriate interventions can be arranged for these high-risk individuals in the rehabilitation process.
authors.affiliation: Department of Physiotherapy, Alice Ho Miu-Ling Nethersole Hospital, Tai Po, Hong Kong.
authors.forename: Rainbow K Y
authors.initials: RK
authors.lastname: Law
authors.forename: Edwin W C
authors.initials: EW
authors.lastname: Lee
authors.forename: Sheung-Wai
authors.initials: SW
authors.lastname: Law
authors.forename: Ben K B
authors.initials: BK
authors.lastname: Chan
authors.forename: Phoon-Ping
authors.initials: PP
authors.lastname: Chen
authors.forename: Grace P Y
authors.initials: GP
authors.lastname: Szeto
mesh_terms: D000328:Adult; D004185:Disability Evaluation; D005260:Female; D006723:Hong Kong; D006801:Humans; D016015:Logistic Models; D017116:Low Back Pain / Q000534:rehabilitation*; D008297:Male; D015999:Multivariate Analysis; D010147:Pain Measurement / Q000379:methods*; D011446:Prospective Studies; D012372:ROC Curve; D020127:Recovery of Function; D015203:Reproducibility of Results; D062707:Return to Work; D018570:Risk Assessment; D018582:Sick Leave / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires