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Lifetime prevalence, psychiatric comorbidity and demographic correlates of Hikikomori in a community population in Japan.

[Speaker] Koyama, Asuka:1
1:Kumamoto University (Japan)

This report presents the result of the community-based epidemiological study on Hikikomori. A face-to-face household survey was conducted of community residents (n=4,134). We defined "Hikikomori" as a psychopathological phenomenon in which people become completely withdrawn from society for 6 months or longer. Among respondents aged 20-49 years old (n=1660), 1.2% had experienced Hikikomori in their lifetime. About 80% of them answered that they had been worried or irritable about their situation during their period of Hikikomori. In addition, 54.5% of the respondents who experienced Hikikomori had also experienced a psychiatric (mood, anxiety, impulse control, or substance-related) disorder in their lifetime. Respondents who experienced Hikikomori had a 6.1 times higher risk of mood disorder. Among all respondents, 0.5% currently had at least one child who had experienced Hikikomori. The study suggests that Hikikomori is common in the community population in Japan.
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