Open AccessInsomnia symptom, mental disorder and suicide: A case‐control study in C hinese rural youths
Author(s) -
Sun Long,
Zhang Jie,
Liu Xianchen
Publication year - 2015
Publication title -
sleep and biological rhythms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 30
eISSN - 1479-8425
pISSN - 1446-9235
DOI - 10.1111/sbr.12105
Subject(s) - insomnia , psychiatry , hamd , depression (economics) , medicine , sleep disorder , psychology , clinical psychology , anxiety , economics , macroeconomics
Insomnia has been reported as a risk factor of suicidal behaviors, but few studies have examined the association among insomnia, mental disorder and suicide, especially among C hinese populations. In this study, we examined the effect of insomnia symptoms on completed suicide in a large sample of suicides and their controls in C hinese rural youths. Subjects were 388 consecutively recruited suicides and 416 community living controls aged 15–34 years in the rural areas of three provinces in C hina. Established psychological autopsy method was used for data collection. Insomnia symptoms were assessed with sleep questions in the Hamilton Depression Rating Scale ( HAMD ) about insomnia, including difficulty initiating sleep ( DIS ), difficulty maintaining sleep ( DMS ) and early morning awakening ( EMA ). The results showed that DIS ( OR = 12.01, P < 0.001), DMS ( OR = 12.82, P < 0.001) or EMA ( OR = 12.08, P < 0.001) was significantly associated with increased risk of suicide even after mental disorder was controlled for. Our study showed that insomnia can be an independent risk factor for suicide. Mental disorders mediated the association between insomnia and suicide. Insomnia should be assessed and treated for individuals at risk of suicide.