Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
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ISSN 2451-2680 (online)
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Advances in Clinical and Experimental Medicine

2020, vol. 29, nr 1, January, p. 45–49

doi: 10.17219/acem/111818

Publication type: original article

Language: English

License: Creative Commons Attribution 3.0 Unported (CC BY 3.0)

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Psychometric validation of Corah’s Dental Anxiety Scale in the Polish population

Artur Pitułaj1,A,B,D, Beata Rajba2,B,C,D, Beata Andrzejewska2,B,C, Andrzej Kiejna2,A,E,F, Marzena Dominiak1,E,F

1 Dental Surgery Department, Wroclaw Medical University, Poland

2 Psychology Research Unit for Public Health, University of Lower Silesia, Wrocław, Poland

Abstract

Background. Corah’s Dental Anxiety Scale (DAS) is one of the most popular psychological scales used for diagnosing odontophobia worldwide. Despite being used by Polish researchers, it has never been validated in the Polish population. Also, there are no similar tools that could be used by dentists for screening.
Objectives. The aim of this study was to validate and present the psychometric properties of the Dental Anxiety Scale adapted to Polish. The scale is a self-assessment tool designed to measure odontophobia and dental anxiety.
Material and Methods. The sample consisted of 162 adults. The adaptation to Polish of the DAS scale included a back-translation and a think-aloud study. The validation procedure incorporated 3 basic methods to be applied in the reliability analysis – the test-retest method, the statistical properties analysis of test items as well as a factor analysis. The general result of the responders was also compared to the anxiety-trait STAI scale and the neuroticism scale form IPIP-BMF-20.
Results. The Cronbach’s α was 0.9. The solution obtained in the exploratory factor analysis was a one-factor model, explaining 76.24% of the variance of responses. The test-retest gave a strong correlation (rho = 0.69, p < 0.001). The correlations between the DAS score, the anxiety-trait STAI score and the neuroticism scale form IPIP-BMF-20 were moderate, as expected. The percent of responders with odontophobia and intense dental anxiety was almost similar to the results of other studies.
Conclusion. The psychometric characteristics of the Polish adaptation of the DAS scale are similar to those reported in the original version. The results allow us to recommend the method for scientific research and patient screening. However, further analyses are necessary to assess if the scores indicating odontophobia and dental anxiety are similar in Poland and in the USA.

Key words

dental anxiety, odontophobia, psychology

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