Relationship Between Chronotype And Quality Of Sleep In Medical Students At The Federal University Of Paraiba, Brazil | 32556
Journal of Nursing & Care
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The aim of this study was to identify chronotypes of medical students at the Federal University of Paraíba (UFPB) and its
relationship to quality of sleep, daytime sleepiness, age, sex and season of birth. The sample consisted of 221 students, assessed
by four questionnaires: Demographic questionnaire, Morningness–Eveningness Questionnaire (MEQ), Pittsburgh Sleep Quality
lndex (PSQI) and Epworth Sleepiness Scale (ESS). There was a statistically significant difference between groups with respect to
chronotypes and PSQI score (po0.0005), but not with excessive daytime sleepiness. A significant negative correlation was found
between the scores of MEQ and PSQI (rho¼ 0.3, po0.0005), demonstrating that the greater the eveningness, the worse the sleep
quality. It was observed that 51.6% of students were classified as indifferent chronotype, 61.5% had poor quality of sleep, while
42.1% had excessive daytime sleepiness. Sex and season at birth did not differ between chronotypes. These findings demonstrate
that the evening chronotype was associated with poor quality of sleep in medical students, but not with increased daytime
sleepiness, with potential impairment to their academic performance and quality of life.
Gabriela Lemos Negri Rique completed her medicine course in 2012 at the Federal University of Paraíba, Brazil. Currently she is a psychiatry resident physician at Famene (Faculdade de Medicina Nova Esperança).