Study is first to show that highly variable sleep schedules predict elevated suicide

[uma9]

Highly variable sleep schedules predict an elevated risk for suicide independent of depression in actively suicidal young adults, according to a research abstract that will be presented Tuesday, June 8, 2010, in San Antonio, Texas, at SLEEP 2010, the 24th annual meeting of the Associated Professional Sleep Societies LLC. Results indicate that a sample of actively suicidal undergraduate students had a delayed mean bedtime of 2:08 a.m.; restricted total sleep time of 6.3 hours; and highly variable sleep schedules, with time of mean sleep onset varying by three hours and time of sleep offset varying by 2.8 hours. However, accounting for baseline depression severity, sleep variability was the only sleep measurement to individually predict increases in suicidal risk at one week and three weeks. Sleep irregularity also was the only sleep-related variable to predict greater mood lability, which in turn predicted elevated suicidal symptoms.

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[james00]

Highly variable sleep schedules predict an elevated risk for suicide independent of depression in actively suicidal young adults, according to a research abstract that will be presented Tuesday, June 8, 2010, in San Antonio, Texas, at SLEEP 2010, the 24th annual meeting of the Associated Professional Sleep Societies LLC. Results indicate that a sample of actively suicidal undergraduate students had a delayed mean bedtime of 2:08 a.m.; restricted total sleep time of 6.3 hours; and highly variable sleep schedules, with time of mean sleep onset varying by three hours and time of sleep offset varying by 2.8 hoursResults indicate that a sample of actively suicidal undergraduate students had a delayed mean bedtime of 2:08 a.m.; restricted total sleep time of 6.3 hours; and highly variable sleep schedules, with time of mean sleep onset varying by three hours and time of sleep offset varying by 2.8 hours. However, accounting for baseline depression severity, sleep variability was the only sleep measurement to individually predict increases in suicidal risk at one week and three weeks. Sleep irregularity also was the only sleep-related variable to predict greater mood lability, which in turn predicted elevated suicidal symptoms.The three-week study was conducted at the Florida State University Laboratory for the Study of the Psychology and Neurobiology of Mood Disorders, Suicide, and Related Conditions. Bernert and laboratory director Thomas Joiner, PhD, studied 49 actively suicidal undergraduate students between the ages of 19 and 23 years; 71 percent were female.