Related Experiment Video
Updated: Apr 4, 2026

Author Spotlight: Unveiling the Connection Between Sleep Disorders and Cognitive Symptoms in Depression
Published on: April 26, 2024
Associations between time in bed and suicidal thoughts, plans and attempts in Korean adolescents
Jae-Hyun Kim1, Eun-Cheol Park2, Sang Gyu Lee3
1Department of Public Health, Graduate School, Yonsei University, Seoul, Korea Institute of Health Services Research, Yonsei University College of Medicine, Seoul, Korea.
Objectives:
To examine the hypothesis that respondents with any of three specific sleep patterns would have a higher likelihood of suicidality than those without reports of these patterns in Korean adolescents.
Setting:
Data from the 2011-2013 Korea Youth Risk Behavior Web-based Survey were used.
Participants:
191,642 subjects were included. The survey's target population was students in grades 7 through 12 in South Korea.
Independent Variable:
Sleep time.
Primary And Secondary Outcome Measures:
Suicidal thoughts, plans and attempts.
Results:
The odds of suicidal thoughts in subjects with very short or long time in bed were 1.487-fold higher (95% CI 1.219 to 1.815) or 0.611-fold lower (95% CI 0.460 to 0.811), respectively, than for subjects with 7 h/day in bed; the odds were similar for suicidal plans. The odds of suicidal thoughts in subjects with early or late awakening times were 1.231-fold higher (95% CI 1.050 to 1.442) or 1.528-fold lower (95% CI 1.000 to 2.334), respectively, than for subjects with 7 h/day in bed; these odds were lower for suicidal plans and attempts. The odds of suicidal thoughts in subjects with early bedtime were 1.748-fold higher (95% CI 1.302 to 2.346), the odds of suicidal plans in people with an early bedtime were 2.494-fold higher (95% CI 1.671 to 3.722) and the odds of suicide attempts in subjects with late bedtime were 1.313-fold higher (95% CI 1.005 to 1.716) than for subjects with a bedtime of 23:00.
Conclusions:
The sleep-related time is associated with suicide-related behaviours in Korean adolescents. Multilateral approaches are needed to identify the greatest risk factors for suicidal behaviours.
More Related Videos
06:23A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice
Published on: September 22, 2020
07:04A High-performance Liquid Chromatography Measurement of Kynurenine and Kynurenic Acid: Relating Biochemistry to Cognition and Sleep in Rats
Published on: August 19, 2018
Related Concept Videos
Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
Cause and Effect
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
Primary Motives: Sleep, Sex, and Pain Avoidance
Sleep is a fundamental physiological drive that fosters a state of restfulness crucial for several bodily functions. It facilitates body restoration, the process by which the body repairs, rejuvenates, and maintains itself during sleep, including memory...
Insomnia
Multiple factors contribute...
Correlations