The total number of respondents who had ever self-harmed was 905 (18.8%, 95% CI 17.7% to 19.9%). Prevalence was higher in females (25.6%) than males (9.1%) and overall prevalence was not substantially different in imputed models taking account of missing data due to questionnaire non-response - the estimated lifetime prevalence for self-harm was 18.4% (95% CIs 17.3%-19.6%) (see Additional file 3).
