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Here, we examined the indications, prevalence, practice, response and remission rates, and side effects in young people treated with ECT in Sweden. We also examined the usage of ECT in the transition to adult psychiatry. Using data from national patient registers and the Swedish National Quality Register for ECT (Q-ECT), we identified patients aged up to 19\u00a0years treated with ECT over a 5-year study period. Response and remission rates were analysed using the Clinical Global Impression (7-point scale)-Improvement (CGI-I) and Severity (CGI-S). A total of 118 individuals were identified, of which 105 were also enrolled in the Q-ECT. The most common indication for ECT was depression (68%; <jats:italic>n<\/jats:italic>\u2009=\u200980). Adolescents aged\u2009&lt;\u200918\u00a0years were more severely ill before treatment than those aged 18\u00a0years (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.01). Three of the hospitals in Sweden treated the majority of adolescents\u2009&lt;\u200918\u00a0years old. The median number of sessions in each ECT series was seven. Unilateral placement of the electrodes was the most common (88%; <jats:italic>n<\/jats:italic>\u2009=\u200999). Fifty-seven percent (<jats:italic>n<\/jats:italic>\u2009=\u200954) of the patients responded (CGI-I, 1\u20132) to the treatment; remission (CGI-S, 1\u20132) was achieved by 32% (<jats:italic>n<\/jats:italic>\u2009=\u200930). Psychotic symptoms were associated with a higher response rate in patients with depression (<jats:italic>P<\/jats:italic>\u2009=\u20090.038). A deterioration of memory compared to pre-treatment was reported in six patients. ECT was associated with high response and remission rates in adolescents with severe psychiatric disorders after non-response to medication.<\/jats:p>","DOI":"10.1007\/s00787-022-02123-2","type":"journal-article","created":{"date-parts":[[2022,12,13]],"date-time":"2022-12-13T17:02:58Z","timestamp":1670950978000},"page":"2649-2656","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Electroconvulsive therapy in children and adolescents: results from a population\u2011based study utilising the Swedish National Quality Register"],"prefix":"10.1007","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0565-3812","authenticated-orcid":false,"given":"Olof","family":"Rask","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7454-3065","authenticated-orcid":false,"given":"Axel","family":"Nordenskj\u00f6ld","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5547-7605","authenticated-orcid":false,"given":"Bj\u00f6rn Axel","family":"Johansson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2041-3550","authenticated-orcid":false,"given":"Pouya","family":"Movahed Rad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,12,13]]},"reference":[{"key":"2123_CR1","unstructured":"WHO (2022) Adolescent and young adult health. https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/adolescents-health-risks-and-solutions. 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