Abstract
BackgroundThe purpose of this study was to make a cross-culturally adapted, Dutch version of the Oral Health Impact Profile (OHIP), a 49-item questionnaire measuring oral health-related quality of life, and to examine its psychometric properties.MethodsThe original English version of the OHIP was translated into the Dutch language, following the guidelines for cross-cultural adaptation of health-related quality of life measures. The resulting OHIP-NL's psychometric properties were examined in a sample of 119 patients (68.9 % women; mean age = 57.1 ± 12.2 yrs). They were referred to the clinic of Prosthodontics and Implantology with complaints concerning their partial or full dentures or other problems with missing teeth. To establish the reliability of the OHIP-NL, internal consistency and test-retest reliability (N = 41; 1 – 2 weeks interval) were examined, using Cronbach's alpha and intraclass correlation coefficients (ICC), respectively. Further, construct validity was established by calculating ANOVA.ResultsInternal consistency and test-retest reliability were excellent (Cronbach's alpha = 0.82 – 0.97; ICC = 0.78 – 0.90). In addition, all associations were significant and in the expected direction.ConclusionIn conclusion: the OHIP-NL can be considered a reliable and valid instrument to measure oral health-related quality of life.
Highlights
The purpose of this study was to make a cross-culturally adapted, Dutch version of the Oral Health Impact Profile (OHIP), a 49-item questionnaire measuring oral health-related quality of life, and to examine its psychometric properties
No patients had to be discarded for missing more than five questions on the total OHIP-NL or more than two questions from within one of the seven domains
The average inter-item correlation of the total OHIP-NL was within the desired range of 0.40–0.50
Summary
The purpose of this study was to make a cross-culturally adapted, Dutch version of the Oral Health Impact Profile (OHIP), a 49-item questionnaire measuring oral health-related quality of life, and to examine its psychometric properties. In order to study the role of such factors in dentistry, Reisine et al [2] examined dental patients with the use of a general health-related quality of life measure, the Sickness Impact Profile. Organization [6], to distinguish more systematically between functional limitation and social impact of physical problems, were followed. This instrument consists of 49 questions about the negative effects of oral conditions on daily functioning. It was shown to be a reliable and valid instrument for the examination of oral diseaserelated disability in different patient groups [7,8,9,10,11,12]
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