German short forms of the Oral Health Impact Profile

• Published in: Community dentistry and oral epidemiology Vol. 34; no. 4; pp. 277 - 288
• Main Authors: John, Mike T., Miglioretti, Diana L., LeResche, Linda, Koepsell, Thomas D., Hujoel, Philippe, Micheelis, Wolfgang
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.08.2006
• Subjects: Adolescent; Adult; Aged; Female; Germany; Gum disease; Health behavior; health-related quality of life; Humans; Male; Middle Aged; Mouth; Mouth Diseases - psychology; Oral Health; oral health-related quality of life; Psychometrics; Quality of Life; questionnaire; Regression Analysis; reliability; Reproducibility of Results; short instruments; Sickness Impact Profile; Surveys and Questionnaires; Translations; validity; Germany
• ISSN: 0301-5661; 1600-0528
• DOI: 10.1111/j.1600-0528.2006.00279.x

–  Objectives:  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.