title: Validation of the chinese version of the oral health impact profile for TMDs (OHIP- TMDs-C).
abstract: OBJECTIVE
  The aim of this study was to evaluate the reliability and validity of the the Chinese version of the Oral Health Impact Profile for TMDs (OHIP-TMDs-C).
  
  
  METHODS
  The OHIP-TMDs was initially translated and cross-culturally adapted to Chinese following international guidelines; then subsequently validated for the psychometric characteristics of reliability and validity. In total, 156 participants with temporomandibular disorders (TMDs) were recruited to complete the questionnaire. The reliability of the OHIP-TMDs-C was evaluated using internal consistency and test-retest methods. The validity of the OHIP-TMDs-C was analysed by construct validity and convergent validity. Construct validity was determined based on factor analysis, and convergent validity by analyzing the correlation between OHIP-TMDs-C subscale scores and the global rating of oral health question.
  
  
  RESULTS
  Cronbach's alpha value (internal reliability) for the total OHIP-TMDs-C score was 0.917 and the intraclass correlation coefficient (ICC) value (test-retest reliability) was 0.899. Construct validity was determined by factor analysis, extracting five factors, accounting for 78.6% of the variance. All items had factor loadings above 0.40. In terms of convergent validity, the OHIP-TMDs-C subscale was significant correlated to the global oral health rating.
  
  
  CONCLUSIONS
  The results suggest that the OHIP-TMDs-C has good reliability and validity and thus may be used as a valuable instrument for patients with TMDs in China.
authors.affiliation: No. 7, Shang Qing Si Road, Department of Pediatric Dentistry, Stomatological Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, China 401147, dentistwjh@163.com.
authors.forename: Song-lin
authors.initials: SL
authors.lastname: He
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002681:China; D003466:Cultural Characteristics; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D009909:Oral Health; D015203:Reproducibility of Results; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis*; D055815:Young Adult