Oral health related quality of life: development and evaluation of two abbreviated Hungarian OHIP versions

Abstract

The aim of this study was to evaluate the intercultural adaptation of two Hungarian short-forms of the Oral Health Impact Profile - OHIP-H14 and OHIP-H5 - on Hungarian population and dental patients. Following English and German methods for question selection, versions with 5 and 14 items were constructed using the complete Hungarian instrument with 53 questions. Construct validity was tested in 112 dental patients by examining a priori hypothesized associations of OHIP summary scores with self-reported oral health and six oral conditions estimated by respondents. Responsiveness of the instrument to change in oral health status was tested in 19 patients treated with temporomandibular disorder pain. To determine the reliability of OHIP scores, test-retest reliability was assessed in 42 prosthodontic patients using a time interval of two weeks. Internal consistency of OHIP scores was determined in 200 randomly selected general population subjects. Substantial associations between the two short-form summary scores, self reported oral health and six oral conditions supported the construct validity of the instruments. Responsiveness measures were on an acceptable level for the 14-item questionnaire where the mean OHIP-H14 scores changed from 10.9 (baseline) to 6.6 (follow-up) during treatment (statistically significant), but not for the OHIP-H5, where the mean score change was not significant. Reliability was acceptable for both instruments indicated by intraclass correlation coefficients of 0.87/0.86 (test-retest reliability), and Cronbach's alphas of 0.88/0.66 (internal consistency). Sufficient discriminative and evaluative psychometric properties make OHIP-H14 suitable for assessment of oral health-related quality of life in cross-sectional and longitudinal studies. OHIP-H5 has marginal psychometric properties and is therefore less suitable for evaluative purposes. © 2008 Akadémiai Kiadó.