Anxiety and Sleep Quality in Dental Students at a Private Brazilian University

The aim of this cross-sectional study was to evaluate the impact of anxiety and quality of sleep on quality of life (QOL) in undergraduate dental students. A total of 141 students were enrolled. All were required to answer the following questionnaires: the State-Trait Anxiety Inventory (STAI) subscale state (S) (STAI-S); the Sleep Assessment Questionnaire (SAQ); and the simplified World Health Organization Quality of Life survey (WHO QOL-bref). The statistical analysis included univariate and bivariate analyses and Poisson regressions. The mean age of the participants was 22.9 (SD=5.2) years; 81.6% were women, and 37.6% studied during the morning shift. The mean STAI-S score was 50.3 (SD=9.4). Sleep problems, classified as “always” or “frequently”, were reported by 11.3% and 18.4% of the sample, respectively. Quality of life had a mean score of 13.2 (SD=2.0). The STAI-S and SAQ scores showed a significant association with all WHOQOL-bref dimensions (p