title: Morningness-eveningness, use of stimulants, and minor psychiatric disorders among undergraduate students.
abstract: Morningness-eveningness dimension in humans have been indicated to influence social behavior and individual health. The aim of the present study was to investigate the association of the morningness-eveningness dimension with behavioral and health aspects in a sample of undergraduate students. We assessed demographic data; the Pittsburgh Sleep Quality Index was used to evaluate sleep quality; the Morningness/Eveningness Questionnaire to determine morningness-eveningness, and the Self-Reporting Questionnaire to assess minor psychiatric disorders. A total of 372 students (66.7% females), on average 21.6 years old, participated in this study. Among them, 92.2% did not smoke, 58.9% engaged in physical activities, and 19.7% were night-shift workers. In regard to morningness-eveningness, 55.9% of the participants were intermediate between evening (39.5%) and morning (4.6%) types. Poor sleep quality (OR = 1.89), minor psychiatric disorders (OR = 1.92), and tobacco consumption (OR = 3.65) predominated among evening types. Evening types were predominantly males (OR = 1.72). This study suggests that evening types are more vulnerable to sleep and psychiatric disturbances, and tend to smoke more than morning types.
authors: Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
authors: Márcia Lacerda De Medeiros
authors: ML
authors: Schneider
authors: Denise Camargo
authors: DC
authors: Vasconcellos
authors: Giovana
authors: G
authors: Dantas
authors: Rosa
authors: R
authors: Levandovski
authors: Wolnei
authors: W
authors: Caumo
authors: Karla V
authors: KV
authors: Allebrandt
authors: Marlene
authors: M
authors: Doring
authors: Maria Paz Loayza
authors: MP
authors: Hidalgo
mesh_terms: D000293:Adolescent; D000437:Alcoholism / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D001008:Anxiety Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D001938:Brazil; D000697:Central Nervous System Stimulants; D002940:Circadian Rhythm; D003430:Cross-Sectional Studies; D003866:Depressive Disorder / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D012907:Smoking / Q000453:epidemiology / Q000523:psychology; D013334:Students / Q000523:psychology* / Q000706:statistics & numerical data; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D000697:Central Nervous System Stimulants