Fig. 2From: Sleepiness, sleep deprivation, quality of life, mental symptoms and perception of academic environment in medical studentsQuality of life of medical students decreases with higher daily sleepiness scores. Mean and standard error values of VERAS-Q (a), self-evaluation of QoL (b) and WHOQOL-BREF questionnaires (c) in the three groups of medical students based on ESS scores. * p <  0.05 compared to ESS 0–10; § p <  0.05 compared to ESS 16–24; # p < 0.05 compared to ESS 11–15Back to article page