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Affiliation
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Department of Epidemiology, Shandong University School of Public Health, Jinan 250012, China; Shandong University Center for Suicide Prevention and Research, No.44, Wenhuaxi Rd, Lixia Dist, Jinan 250012, China. Electronic address: jiacunxian@sdu.edu.cn. |
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Abstract
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AIMS: This study aimed to examine the associations between stressful life events, insomnia, and suicidality including suicidal ideation (SI), suicide plan (SP) and suicide attempt (SA) in a large sample of Chinese adolescents.
METHODS: A total of 11,831 adolescents who participated in the baseline survey of Shandong Adolescent Behavior and Health Cohort were included for the analysis. Participants were sampled from 8 middle/high schools in 3 counties of Shandong, China. Participants completed a structured behavior and health questionnaire, including suicidality, demographics, depression/anxiety, stressful life events (SLEs), and insomnia in November-December 2015. A series of logistic regression models and mediation analyses were performed to examine the associations between SLEs, insomnia and suicidality.
RESULTS: The prevalence rates of overall suicidality, SI, SP and SA in the last year were 13.1%, 12.5%, 3.3%, and 1.5%, respectively. SLEs were significantly associated with overall suicidality, SI, and SP. Insomnia was an independent risk factor of suicidality and a mediator of the association between SLEs and suicidality. The total effect of SLEs on overall suicidality was 0.597 (95%CI: 0.534-0.661), including 0.457 (95%CI: 0.391-0.523) for direct effect and 0.158 (95%CI: 0.138-0.178) for indirect effect. Insomnia also mediated the associations of SLEs with SI, SP and SA, respectively. LIMITATIONS: Causal relationship could not be concluded because this study is cross-sectional.
CONCLUSIONS: Stressful life events and insomnia are directly associated with suicidality in adolescents. The association between SLEs and suicidality is partially mediated by insomnia.
Copyright © 2019 Elsevier B.V. All rights reserved.
Language: en |