title: Self-injury in Japanese junior and senior high-school students: Prevalence and association with substance use.
abstract: The present study examined the prevalence of self-injury and its association with substance abuse in 2974 junior and senior high-school students, by self-reporting questionnaires. Consequently, 9.9% of students (boys, 7.5%; girls, 12.1%) reported an experience of self-injury at least once. Significant differences were found in substance use-related problems including alcohol abuse, smoking, and illicit drug use (P < 0.001) between students with and without an experience of self-injury. The results also suggest that self-injuring students may more easily gain access to illicit drugs even if they had not yet experienced the use of illicit drugs. Self-injury in adolescence may be associated with substance use and is considered to be a risk factor predicting future illicit drug use.
authors.affiliation: Center for Suicide Prevention, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan. tmatsu@ncnp.go.jp
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Fumi
authors.initials: F
authors.lastname: Imamura
mesh_terms: D000293:Adolescent; D000437:Alcoholism / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D006306:Health Surveys; D006801:Humans; D013287:Illicit Drugs; D007564:Japan; D008297:Male; D016728:Self-Injurious Behavior / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D012907:Smoking / Q000453:epidemiology* / Q000523:psychology; D013334:Students / Q000523:psychology / Q000706:statistics & numerical data*; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology
chemical_list: D013287:Illicit Drugs