British Medical Journal 2002 Study on Self-Harm in Adolescents
A 2002 survey of 15 and 16 year old students in 41 schools in England found that 6.9% reported acts of deliberate self-harm in the previous year, with a significantly higher prevalence in females (11.2%) than in males (3.2%).
12.6% of incidents of self-harm resulted in a hospital admission.
US Suicide Prevalence by Age
Above information is per 100,000 people.
Source: National Institute of Mental Health (NIMH)