title: Sleep disturbance and attempted suicide in rural China: a case-control study.
abstract: This study aimed to examine the association between sleep disturbance and attempted suicide in rural China. The study group included 409 suicide attempters from six rural counties in Shandong Province, China and an equal number of controls matched on age, sex, and residency. Sleep disturbance was assessed by the item "sleep restless" in the Center for Epidemiologic Studies Depression Scale. Sleep disturbance was reported more frequently in suicide attempters than in controls (1-2 days/week, 9.0% vs. 4.4%; 3-4 days/week, 11.5% vs. 2.4%; ≥5 days/week, 30.3% vs. 7.5%, χ 2= 128.72, p < 0.001). Suicide risk was significantly associated with increased frequency of sleep disturbance (OR = 3.98, 95% CI = 1.62-9.74 for 1-2 days/week; OR = 3.28, 95% CI = 1.21-8.84 for 3-4 days/week; OR = 2.41, 95% CI = 1.26-4.60 for ≥5 days/week) even after adjusting for potential psychosocial confounding factors and mental disorders. This finding may have important implications for early intervention and prevention of suicide.
authors.affiliation: *Department of Epidemiology, Shandong University School of Public Health and Shandong University Center for Suicide Prevention Research, Jinan, Shandong; †Shandong Center for Disease Control and Prevention, Jinan, China; and ‡The University of Tennessee Health Science Center, Memphis, TN.
authors.forename: Cun-Xian
authors.initials: CX
authors.lastname: Jia
authors.forename: Wen-Chao
authors.initials: WC
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Wei
authors.forename: Ji-Yu
authors.initials: JY
authors.lastname: Zhang
authors.forename: Xian-Chen
authors.initials: XC
authors.lastname: Liu
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D002681:China / Q000208:ethnology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012424:Rural Population / Q000706:statistics & numerical data*; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000453:epidemiology*; D013406:Suicide, Attempted / Q000706:statistics & numerical data*