title: German short forms of the Oral Health Impact Profile.
abstract: OBJECTIVE
  We report the development and psychometric evaluation of short forms of the Oral Health Impact Profile German version (OHIP-G) - an instrument to assess oral health-related quality of life (OHRQoL).
  
  
  METHODS
  A five-item short form was developed using best subset regression in 2050 subjects from a national survey. Two 14-item versions were derived from English-language short forms and a 21-item version from previous factor analytic work. A second sample from the general population (n = 163) and a sample of clinical patients with temporomandibular disorders (TMD; n = 175) were used to investigate validity and internal consistency. Test-retest reliability was evaluated in 30 prosthodontic patients before treatment. Responsiveness was assessed in 67 patients treated for their TMD pain.
  
  
  RESULTS
  Associations between short form summary scores and self-report of oral health and four oral disorders in the general population and in TMD patients were interpreted as support for convergent/groups validity. The instruments' responsiveness (effect measures of 0.55-0.98), test-retest reliability (intraclass correlation coefficients: 0.72-0.87), and internal consistency (Cronbach's alpha: 0.65-0.92) were sufficient.
  
  
  CONCLUSIONS
  Sufficient discriminative and evaluative psychometric properties of short forms of the OHIP-G make the instruments suitable to assess OHRQoL in cross-sectional as well as longitudinal studies.
authors.affiliation: Department of Prosthodontics and Materials Science, School of Dentistry, University of Leipzig, Germany. mike.john@medizin.uni-leipzig.de
authors.forename: Mike T
authors.initials: MT
authors.lastname: John
authors.forename: Diana L
authors.initials: DL
authors.lastname: Miglioretti
authors.forename: Linda
authors.initials: L
authors.lastname: LeResche
authors.forename: Thomas D
authors.initials: TD
authors.lastname: Koepsell
authors.forename: Philippe
authors.initials: P
authors.lastname: Hujoel
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Micheelis
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000523:psychology*; D009909:Oral Health; D011594:Psychometrics; D011788:Quality of Life; D012044:Regression Analysis; D015203:Reproducibility of Results; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires; D014177:Translations