UvA - DARE ( Digital Academic Repository ) The Dutch version of the Oral Health Impact Profile ( OHIP - NL ) : translation , reliability and construct validity

Background: 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. Methods: The 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. Results: Internal 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. Conclusion: In conclusion: the OHIP-NL can be considered a reliable and valid instrument to measure oral health-related quality of life. Background Since the recognition of the multidimensional character of health issues, a conceptual framework has been created to analyze the role of psychosocial factors in health and disease [1]. 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. Specific instruments to measure the impact of oral disease on the quality of life of individuals were developed as well, like the Social Impact of Dental Disease [3] and the Dental Impact Profile [4]. Likewise, Slade & Spencer [5] published a study on the development and evaluation of the Oral Health Impact Profile (OHIP), in which the guidelines of the World Health Published: 11 April 2008 BMC Oral Health 2008, 8:11 doi:10.1186/1472-6831-8-11 Received: 9 November 2007 Accepted: 11 April 2008 This article is available from: http://www.biomedcentral.com/1472-6831/8/11 © 2008 van der Meulen et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. BMC Oral Health 2008, 8:11 http://www.biomedcentral.com/1472-6831/8/11