@article{ref1,
title="Suicide risk among individuals with sleep disturbances in Japan: a case-control psychological autopsy study",
journal="Sleep Medicine",
year="2014",
author="Kodaka, Manami and Matsumoto, Toshihiko and Katsumata, Yotaro and Akazawa, Masato and Tachimori, Hisateru and Kawakami, Norito and Eguchi, Nozomi and Shirakawa, Norihito and Takeshima, Tadashi",
volume="15",
number="4",
pages="430-435",
abstract="OBJECTIVE: This case-control psychological autopsy study aimed to explore a relationship between sleep disturbances and suicide among Japanese, as well as determine the importance and usability of screening for sleep disturbances in suicide prevention. <br><br>METHODS: A semi-structured interview was conducted with the close family members of 49 adult suicide completers and 145 gender-, age-, and residential municipality-matched living controls. The survey included sections on demographics, sleep disturbances, and mental disorders. Conditional logistic regression analyses were performed to compare sleep disturbance prevalence between the two groups. <br><br>RESULTS: A significantly higher prevalence of sleep disturbances was found among the suicide group (75.5%) compared to the controls (11.0%) (odds ratio [OR]=21.6, p<0.001). The association remained significant after adjusting for mental disorders (OR=12.7, p<0.001). The population attributable risk percent of suicide associated with sleep disturbances and mental disorders was estimated to be 56.4% and 35.3%, respectively. <br><br>CONCLUSIONS: The study confirmed that sleep disturbances are an important risk factor of suicide, independent of mental disorders. Sleep disturbances accounted for a greater proportion of suicide cases than did mental disorders in the Japanese population given the higher prevalence, and could thus be considered an important target in suicide prevention in Japan.<p /> <p>Language: en</p>",
language="en",
issn="1389-9457",
doi="10.1016/j.sleep.2013.11.789",
url="http://dx.doi.org/10.1016/j.sleep.2013.11.789"
}