title: Reliability and validity of a Chinese version of the Oral Health Impact Profile for edentulous subjects.
abstract: OBJECTIVE
  The aim of this study was to evaluate the reliability and validity of the Chinese version of the Oral Health Impact Profile for edentulous subjects (OHIP-EDENT-C).
  
  
  METHODS
  After translation and cross-cultural adaptation following international guidelines, 162 complete denture wearers were recruited to complete the questionnaire. The reliability of the OHIP-EDENT-C was evaluated using internal consistency and test-retest methods. The validity of the OHIP-EDENT-C was analyzed by construct validity and convergent validity. Construct validity was determined based on factor analysis and convergent validity by analyzing the correlation between OHIP-EDENT-C subscale scores and the global question.
  
  
  RESULTS
  Cronbach's alpha value (internal reliability) for the total OHIP-EDENT-C score was 0.972, and the intraclass correlation coefficient value (test-retest reliability) was 0.763 (similar to the original OHIP-EDENT). Construct validity was determined by factor analysis, extracting five factors, accounting for 74.31 % of the variance. All items had factor loadings above 0.40. In terms of convergent validity, the OHIP-EDENT-C subscale was significantly highly correlated to the global question.
  
  
  CONCLUSIONS
  The results suggest that the OHIP-EDENT-C is a reliable and valid measure to evaluate OHRQoL for edentulous subjects in China.
authors.affiliation: Chongqing key Laboratory of Oral Diseases and Biomedical Sciences; Department of Pediatric Dentistry, Stomatological Hospital of Chongqing Medical University, Chongqing Medical University, No. 7, Shang Qing Si Road, Chongqing, 401147, China, songlinhecqmu@163.com.
authors.forename: Song-lin
authors.initials: SL
authors.lastname: He
authors.forename: Jin-hua
authors.initials: JH
authors.lastname: Wang
mesh_terms: D000368:Aged; D044466:Asian People; D002681:China; D003824:Denture, Complete; D005260:Female; D006801:Humans; D008297:Male; D009066:Mouth, Edentulous / Q000523:psychology*; D009909:Oral Health; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014177:Translations