Table 1 Characteristics of 1020 adolescents aged 11–17 living in the SLaM catchment area presenting to the 4 local EDs with self-harm between March 2009 and March 2013
Characteristics | Self-harm presentations (n, %) | |
|---|---|---|
Male (n=186) | Female (n=834) | |
Mean age at first self-harm presentation (SD) | 15.9 (1.9) | 15.6 (1.4) |
Known to MH services prior to self-harm | 83 (44.6) | 407 (48.8) |
Ethnicity | ||
 White | 88 (47.3) | 357 (42.8) |
 Black | 28 (15.0) | 212 (25.4) |
 Asian | 12 (6.5) | 47 (5.7) |
 Mixed | 16 (8.6) | 102 (12.2) |
 Other | 12 (6.5) | 29 (3.5) |
 Not disclosed/unknown | 30 (16.1) | 87 (10.4) |
National neighbourhood deprivation | ||
 Most deprived quintile | 63 (33.9) | 320 (38.4) |
 2nd | 79 (42.5) | 330 (39.5) |
 3rd | 32 (17.2) | 120 (14.4) |
 4th | <10 (<5.4) | 44 (5.3) |
 Least deprived quintile | <10 (<5.4) | 20 (2.4) |
Type of self-harm | ||
 Self-poisoning or overdose | 95 (51.1) | 617 (74.0) |
 Self-injury (cutting, stabbing, self-battery) | 74 (39.8) | 171 (20.5) |
 Both self-poisoning and self-injury | <10 (<5.4) | 29 (3.5) |
 Other (hanging, jumping from a height, immersion in water) | 14 (7.5) | 17 (2.0) |
ICD-10 Axis 1b(pre- or post-first self-harm) | No. and prevalence of disorders (%)a | |
 Substance misuse disorders (F10–19) | 10 (5.4) | 13 (1.5) |
 Depressive disorder (F32) | 53 (28.5) | 277 (33.2) |
 Psychotic disorders (F20–29,31,32·3, F33·3) | <10 (<5.4) | <10 (<1.2) |
 Anxiety disorder (F40–42, F43–F48) | 42 (22.5) | 186 (22.3) |
 Eating disorder | <10 (<5.4) | 17 (2.0) |
 Autism spectrum disorders (F84) | 18 (9.7) | 21 (2.5) |
 Hyperkinetic disorder (F90) | 19 (10.2) | 15 (1.7) |
 Child-onset emotional and behavioural disorders (F91-F98) | 33 (17.7) | 127 (15.2) |
 No diagnosis | 41 (22.0) | 249 (29.9) |
 Other | <10 (<5.4) | 21 (2.5) |
Axis 3 intellectual disability | <10 (<5.4) | <10 (<1.2) |