Psychometric properties of Greek versions of the Modified Corah Dental Anxiety Scale (MDAS) and the Dental Fear Survey (DFS)

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Psychometric properties of Greek versions of the Modified Corah Dental Anxiety Scale (MDAS) and the Dental Fear Survey (DFS)

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dc.contributor.author Coolidge, Trilby en_US
dc.contributor.author Arapostathis, Konstantinos Nikolaos en_US
dc.contributor.author Emmanouil, Dimitris en_US
dc.contributor.author Dabarakis, Nikolaos en_US
dc.contributor.author Patrikiou, Antonis en_US
dc.contributor.author Economides, Nikolaos en_US
dc.contributor.author Kotsanos, Nikolaos en_US
dc.date.accessioned 2010-04-21T15:49:55Z
dc.date.available 2010-04-21T15:49:55Z
dc.date.issued 2008 en_US
dc.identifier.citation Coolidge T, Arapostathis K, Emmanouil D, et al. Psychometric properties of Greek versions of the Modified Corah Dental Anxiety Scale (MDAS) and the Dental Fear Survey (DFS). BMC Oral Health. 2008;8(1):29. en_US
dc.identifier.other 10.1186/1472-6831-8-29 en_US
dc.identifier.uri http://www.biomedcentral.com/1472-6831/8/29 en_US
dc.identifier.uri http://hdl.handle.net/1773/15727
dc.description.abstract Background: A growing body of literature describes the performance of dental fear questionnaires in various countries. We describe the psychometric properties of Greek versions of the Modified Dental Anxiety Scale (MDAS) and the Dental Fear Survey (DFS) in adult Greek patients. Methods: Greek versions of the MDAS and DFS were administered to two samples of adult dental patients. In the first sample, 195 patients attending one of three private practice dental offices in a large city in Greece completed the questionnaires in the waiting room before dental treatment. After treatment, their dentists (who did not know how the patients had answered the questionnaire) rated their anxiety during dental treatment. In the second sample, 41 patients attending a Greek university dental school clinic completed the questionnaire twice at two separate visits, in order to provide test-retest data. Cronbach's alpha was used to compute the internal consistencies, while Spearman's rho was used to compute the testretest reliabilities. Construct validity was assessed by correlating the responses to the MDAS and DFS by Spearman's rho. Spearman's rho was also used to examine the criterion validities, by comparing the questionnaire responses with the dentists' ratings of anxiety. Results: The internal consistencies for the MDAS were 0.90 and 0.92 in the two samples; for the DFS, the internal consistencies were 0.96 in both samples. The test-retest reliabilities were 0.94 for the MDAS and 0.95 for the DFS. The correlation between the two questionnaires was 0.89. The patients' responses to both questionnaires were significantly related to the dentists' ratings of their anxiety during dental treatment (both p values less than 0.001). Conclusion: The results indicate that the Greek versions of the MDAS and DFS have good internal consistencies and test-retest reliabilities, as well as good construct and criterion validities. The psychometric properties of the Greek versions of these questionnaires appear to be similar to those previously reported in other countries. en_US
dc.description.sponsorship This research was supported by NIH/NIDCR grant T32DE07132. en_US
dc.language.iso en_US en_US
dc.title Psychometric properties of Greek versions of the Modified Corah Dental Anxiety Scale (MDAS) and the Dental Fear Survey (DFS) en_US
dc.type Article en_US


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