• Jessica Judd, Rhiannon M Pilkington, Catia Malvaso, Alexandra M Procter, Alicia Montgomerie, Jemma Ja Anderson, Jon N Jureidini, Julie Petersen, John Lynch, and Catherine R Chittleborough.
• The University of Adelaide, Adelaide, SA.
• Med. J. Aust. 2024 Nov 18; 221 (10): 540545540-545.

ObjectivesTo investigate the number of mental health-related hospitalisations of adolescents (12-17 years) in South Australia by level of contact with the child protection system (0-11 years).Study DesignWhole-of-population descriptive study; analysis of de-identified linked administrative data from the Better Evidence Better Outcomes Linked Data (BEBOLD) platform.Setting, ParticipantsAdolescents born in South Australia, 1991-1999; linked SA Department for Child Protection, Admitted Patient Care (SA Health), and South Australian Perinatal Statistics collection (SA Department for Health and Wellbeing) data.Main Outcome MeasuresProportion of adolescents (12-17 years) hospitalised with mental health-related diagnoses; proportion of mental health-related hospitalisations of adolescents, by level of child protection contact (0-11 years) (no contact, notification but not screened in, screened-in notification but not investigated, investigation but not substantiated, substantiation, and out-of-home care).ResultsOf 175 115 adolescents born during 1991-1999, 5646 (3.2%) had been hospitalised with mental health conditions, and 27 203 (15.5%) had histories of contact with child protection services. The proportion of adolescents admitted to hospital with mental health-related diagnoses increased with the level of prior child protection contact, from 3366 of 147 912 adolescents with no contact (2.3%), to 398 of 6645 with notifications (6.0%), to 209 of 1191 who had been placed in out-of-home care (17.5%). Contact with child protection services was recorded for 2280 of 5646 adolescents admitted to hospital with mental health-related diagnoses (40.4%); 4477 of 10 633 mental health-related hospitalisations (44.9%) were of adolescents with histories of child protection services contact, including 1285 hospitalisations (12.1%) of adolescents for whom substantiated maltreatment (but not out-of-home care) was recorded, and 568 hospitalisations (5.3%) of adolescents who had been placed in out-of-home care.ConclusionAbout 45% of mental health-related hospitalisations of 12-17-year-old adolescents were of people who had had contact with child protection services by the age of 11 years, although only 15.5% of all adolescents had histories of child protection contact. The trauma associated with a history of child protection can have longer term sequelae, and this should be considered when adolescents are hospitalised with mental health conditions.© 2024 AMPCo Pty Ltd.

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