title: Reliability and Validity of a Nepalese Version of the Oral Health Impact Profile for Edentulous Subjects.
abstract: OBJECTIVE
  To assess the reliability and to validate the translated Nepalese version of the Oral Health Impact Profile (OHIP-EDENT-N) in Nepalese edentulous subjects.
  
  
  METHODS
  The international guidelines for translation and cross-cultural adaption of OHIP-EDENT were followed, and a Nepalese version of the questionnaire was adapted for this study. Eighty-eight completely edentulous subjects were then selected for the study and completed their responses for the questionnaire. The reliability of the OHIP-EDENT-N was evaluated using internal consistency. Validity was assessed as construct and convergent validity. Construct validity was determined using exploratory factor analysis (EFA). The correlation between OHIP-EDENT-N subscale scores and the global question was investigated to test the convergent validity.
  
  
  RESULTS
  Cronbach's alpha for the total score of OHIP-EDENT-N was 0.78. Construct validity was assessed by factor analysis: 70.196% of the variance was accountable to five factors extracted from the factor analysis. Factor loadings above 0.40 were noted for all items. In terms of convergent validity, significant correlations could be established between OHIP-EDENT-N and global questions.
  
  
  CONCLUSIONS
  This study has been able to establish the reliability and validity of the OHIP-EDENT-N, and OHIP-EDENT-N can be a considered a reliable tool to assess the oral health related quality of life in the Nepalese edentulous population.
authors.affiliation: Department of Prosthodontics, College of Dental Surgery, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Bidhan
authors.initials: B
authors.lastname: Shrestha
authors.affiliation: School of Public Health and Community Medicine, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Surya Raj
authors.initials: SR
authors.lastname: Niraula
authors.affiliation: Department of Prosthodontics, College of Dental Surgery, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Prakash K
authors.initials: PK
authors.lastname: Parajuli
authors.affiliation: Department of Prosthodontics, College of Dental Surgery, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Pramita
authors.initials: P
authors.lastname: Suwal
authors.affiliation: Department of Prosthodontics, College of Dental Surgery, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.
authors.forename: Raj Kumar
authors.initials: RK
authors.lastname: Singh
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009066:Mouth, Edentulous / Q000523:psychology*; D009390:Nepal; D009909:Oral Health; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014177:Translations
keywords: Complete denture; edentulous mouth; patient satisfaction; quality of life; questionnaires; validity