title: Romanian version of the oral health impact profile-49 questionnaire: validation and preliminary assessment of the psychometrical properties.
abstract: OBJECTIVE
  Oral Health Related Quality of Life (OHRQoL) represents a multidimensional structure, being measured by complex instruments, such as the Oral Health Impact Profile (OHIP). The aim of this present study is to develop and test the psychometric properties of an initial Romanian (OHIP-49Ro) version.
  
  
  METHODS
  The original OHIP-49 version was translated using a forward-backward technique into the Romanian OHIP-49Ro, which was applied in an interview form to 150 patients of the Second Medical Clinique of Internal Medicine, Cluj-Napoca. Confirmatory Factor Analysis (CFA) was applied, in order to evaluate the factor structure and construct validity of the OHIP-49Ro.
  
  
  RESULTS
  The correlations between the OHIP-49Ro subscales were all positive and statistically significant. Cronbach's Alpha coefficients values are above 0.7 for all subscales, providing support for the internal consistency of OHIP-49Ro scale scores. Regarding the CFA, for the seven factor model, the Bentler scaled chi-square (S-Bχ(2)) indicated a value of 2193.74 (df=1091; p=0.001), the CFI a value of 0.740, the TLI a value of 0.72 and RMSEA the value of 0.82.
  
  
  CONCLUSIONS
  The results of this study suggest a high internal consistency of the OHIP-49Ro instrument. Due to the correlations between several sets of factors, and the multiple-factorial load for several items, the OHIP-49Ro's factorial structure requires further research on different samples and in different cultural and educational contexts.
authors.affiliation: Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
authors.forename: Alexandru-Gratian
authors.initials: AG
authors.lastname: Grecu
authors.affiliation: Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
authors.forename: Diana
authors.initials: D
authors.lastname: Dudea
authors.affiliation: Department of Psychology, Faculty of Psychology and Educational Sciences, Babes-Bolyai University, Cluj-Napoca, Romania.
authors.forename: Robert
authors.initials: R
authors.lastname: Balazsi
authors.affiliation: 2nd Medical Department, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
authors.forename: Dan Lucian
authors.initials: DL
authors.lastname: Dumitrascu
keywords: oral health; quality of life; reliability; validation