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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.

Oral-health-related quality of life (OHRQoL) is expected to have multiple dimensions. It was the aim of this study to investigate the dimensional structure of OHRQoL measured by the Oral Health Impact Profile (German version) (OHIP-G) and to derive a summary score for the instrument. Subjects (N = 2050; age, 16-79 yrs) came from a national survey. We used rotated principal-components analysis to derive a summary score and to explore the dimensional structure of OHIP-G. The first principal component explained 50% of the variance in the data. The sum of OHIP-G item responses was highly associated with the first principal component (r = 0.99). This simple but informative OHIP-G summary score may indicate that simple sums are also potentially useful scores for other OHRQoL instruments. Four dimensions (psychosocial impact, orofacial pain, oral functions, appearance) were found. These OHIP-G dimensions may serve as a parsimonious set of OHRQoL dimensions in general.

Objectives: This study investigated the association between denture status, demographic factors, and oral health-related quality of life (OHRQoL)., Methods: OHRQoL was measured using the German version of the Oral Health Impact Profile (OHIP-G, 53 items), which was administered in a personal interview to 2050 subjects (60% of eligible subjects responded) 16-79 years of age in a national survey. Median regression was used to analyze the influence of denture status (no, removable, complete dentures), age, gender, education (less than 10 years of schooling, 10-12 years, more than 12 years), and residential area (rural, urban) on the OHIP-G summary score., Results: In bivariable analyses, compared to the base category, the OHIP-G median increased 8.0 U for subjects with removable dentures, 20.0 U for subjects with complete dentures, 1.7 U for each 10-year age period, 2.0 U for men, 3.0 U for less than 10 years of schooling (compared to > or =10 years.), and 1.0 U for urban areas (P < 0.05 for all effects except for residential area). In the multivariable analysis, compared to subjects without dentures, subjects with removable dentures had a 7.5 (95% CI: 5.2-9.8) higher OHIP-G median and subjects with complete dentures had a 18.5 (95% CI: 14.7-22.4) higher median when demographic variables were controlled. No demographic variables were statistically significant except for residential area (P = 0.04)., Conclusions: Denture status was a stronger predictor for impaired OHRQoL than demographic variables and rendered age and education almost negligible in their influence on OHRQoL.

The prevalence of impaired oral health-related quality of life (OHRQoL) in Germany is unknown. The aim was to determine the OHRQoL distribution in the population and to derive population-based norms. OHRQoL was measured using the German version of the Oral Health Impact Profile (OHIP-G, 53 items) which was administered in a personal interview to 2050 subjects (response proportion: 60%) 16-79 yr of age. Subjects were sampled using a multistage sampling technique in a national survey. Prevalence was calculated for any impairment on the item (OHIP answer categories ranging from 'hardly ever' to 'very often') and for frequent problems (categories 'fairly often' and 'very often'). Norms for the OHIP-G summary score (sum of all item responses in the English-language OHIP, range 0-196) were described by percentiles. Past-month prevalence of any impairment in OHRQoL ranged from 13% to 46% across all items. Frequent problems were rare (/= 5 OHIP-G score points and 10% had >/= 38 points. For subjects with removable dentures the scores were 15 and 60 points, respectively, and for subjects with complete dentures, 23 and 85 points, respectively. The results provide the first overview of impaired OHRQoL in Germany.