title: Reliability and validity of two oral health related quality of life measures in Myanmar adolescents.
abstract: OBJECTIVE
  To assess two Oral Health Related Quality of Life (OHQoL) measures and the levels of oral impacts among 14-year-old students in Yangon Division, Myanmar.
  
  
  METHODS
  Cross-sectional validation study. Setting High schools in Yangon Division.
  
  
  METHODS
  A multi-stage stratified random cluster sample of 543 students.
  
  
  METHODS
  Prevalence, extent (number of impacts) and total score as recorded using the Oral Impacts on Daily Performance (OIDP) and the short form of the Oral Heath Impact Profile (OHIP-14). Psychometric measures of validity and reliability.
  
  
  RESULTS
  15.8% and 53.0% of participants had an impact using OIDP and OHIP-14 respectively. The extents and total scores were low among those with impacts. Both measures had good reliability (Cronbach's alpha 0.72 for OIDP and 0.86 for OHIP-14). The presence of dental caries was associated with summary measures of OHIP-14 but not with OIDP. The most frequent cause of impact was dental caries.
  
  
  CONCLUSIONS
  Both OIDP and OHIP-14 had reasonable reliability but OHIP-14 had superior construct validity. OHIP-14 appears to be more useful as an instrument to discriminate between groups with and without impacts in population surveys.
authors.affiliation: Division of Dental Public Health and Oral Health Services Research, Guy's, King's and St Thomas' Dental Institute, King's College London, London, UK.
authors.forename: K K
authors.initials: KK
authors.lastname: Soe
authors.forename: S
authors.initials: S
authors.lastname: Gelbier
authors.forename: P G
authors.initials: PG
authors.lastname: Robinson
mesh_terms: D000293:Adolescent; D003430:Cross-Sectional Studies; D003731:Dental Caries / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D009909:Oral Health; D015995:Prevalence; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires