Characteristic Adolescent Illness Alcohol Other No in group 9 5 4 2 Only episode of DSH 2 2 0 2 Mean (range) years since last episode 3.9 (3.3-7.0) 6.3 (5.3-7.5) 5.2 (3.5-6.6) 6.7 (6.5-6.9) Diagnosis at index episode Harmful use of alcohol (1), none (2), depression (6) Depression (4), OCD (1) Harmful use of alcohol (1), alcohol dependence (3) None (1), somatoform pain disorder (1) Mean (range) index SIS 10 (5-20) 13 (3-24) 8 (3-12) 18 (13-23) Employment status at index episode Full time education (4), unemployed (1), sick (1), employed (3) Employed (4), disabled (1) Unemployed (3), housewife (1) Employed (1), disabled (1) Mean (range) age at index episode (years) 19.2 (16-25) 39.6 (33-48) 38.8 (24-48) 41 (34-48)

DSH=deliberate self harm; OCD=obsessive compulsive disorder; SIS=suicide intent scale (increased score suggests higher risk of suicide).