Reliability and Validity of the Turkish Adaptation of Dental Environmental Stress Scale: A Methodological Study

Aim: This paper aims to develop the Turkish version of the dental environmental stress (DES) scale that can evaluate perceived DES in Turkish dental students. Materials and Methods: A methodological study was conducted to adapt the DES scale to Turkish language in Gaziantep University, Faculty of Dentistry. The study group consisted of 392 students in the academic year 2018/19. The students were surveyed using the DES scale, translated into Turkish language. The demographic characteristics were analyzed by using descriptive statistical analyses. Kaiser-Meyer-Olkin and Bartlett’s Test of Sphericity were employed to evaluate the suitability of the dataset. Exploratory factor analysis was performed to assess construct validity. Depression Anxiety Stress Scale-21 was used to predict the power of the scale. In reliability analysis, the instrument’s internal consistency and corrected item-total correlation, Cronbach’s α reliability were studied. Results: Content Validity Index of the scale items was found to have a high validity range of 0.97. Two items with an estimate value less than 0.4 were excluded and 30 items yielded five factor. Five factors having eigenvalues greater than 1.0 explained 52.299% of the total variance. Each factor showed adequate internal consistency. Factor loadings ranged from 0.46 to 0.77. In the concurrent validity, significant positive relationship was found between DASS-21 and Turkish DES. Conclusion: According to psychometric properties, the Turkish version of the DES presented good results, thus it could be a valid instrument to assess the perceived stress in Turkish dental students.