Examining non-suicidal self-injury among adolescents with mental health needs, in Ontario, Canada.

The objectives of this study were to examine the prevalence of non-suicidal self-injury (NSSI) among adolescents with mental health needs and specific factors associated with NSSI among adolescents aged 14 to 18 years who received mental health services in adult mental health facilities in Ontario, Canada. Females were 2.19 times more likely to engage in NSSI than males. Intentional misuse of prescription medication emerged as the most important factor associated with NSSI.