Clinical Psychopharmacology and Neuroscience

Korean College of Neuropsychopharmacology (대한정신약물학회)
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The Relationship between Chronotype and Sleep Quality in Korean Firefighters

  • Yun, Ji-Ae (Department of Neuropsychiatry, Eulji University Hospital, Eulji University School of Medicine) ;
  • Ahn, Yeon-Soon (Department of Occupational and Environmental Medicine, Dongguk University Ilsan Hospital) ;
  • Jeong, Kyoung-Sook (Department of Occupational and Environmental Medicine, Dongguk University Ilsan Hospital) ;
  • Joo, Eun-Jeong (Department of Neuropsychiatry, Eulji General Hospital, Eulji University School of Medicine) ;
  • Choi, Kyeong-Sook (Department of Neuropsychiatry, Eulji University Hospital, Eulji University School of Medicine)
  • Received : 2014.11.22
  • Accepted : 2015.03.06
  • Published : 2015.08.31
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Abstract

Objective: We examined the relationship between chronotype and sleep disturbance, and assessed various factors that might be associated with sleep disturbance in Korean firefighters. Methods: Self-administered questionnaires assessing chronotype, depression, alcohol use, posttraumatic stress disorder (PTSD), stress response and sleep quality were examined in 515 firefighters. Results: Evening type firefighters more reported depression, alcohol use, PTSD, stress response and sleep disturbance. Also evening chronotype was the most significant risk factor for poor sleep quality (odds ratio [OR], 4.812; 95% confidence interval [CI], 2.448-9.459), even after controlling for all other variables (OR, 3.996; 95% CI, 1.806-8.841). Conclusion: Chronotype was the factor most strongly associated with sleep disturbance, and therefore should be considered an important variable in sleep quality, particularly in occupations involving stressful activities, such as firefighting.

Keywords

Acknowledgement

Supported by : Korea National Emergency Management Agency

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