{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T19:28:27Z","timestamp":1790710107824,"version":"4.1.0"},"reference-count":25,"publisher":"BMJ","issue":"10","funder":[{"DOI":"10.13039\/501100002001","name":"Health Services and Delivery Research Programme","doi-asserted-by":"publisher","award":["11\/1023\/17"],"award-info":[{"award-number":["11\/1023\/17"]}],"id":[{"id":"10.13039\/501100002001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2019,7,25]]},"published-print":{"date-parts":[[2019,10]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>This study aimed to estimate the incidence of DSM5 anorexia nervosa in young people in contact with child and adolescent mental health services in the UK and Ireland.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Observational, surveillance study, using the Child and Adolescent Psychiatry Surveillance System, involving monthly reporting by child and adolescent psychiatrists between 1st February 2015 and 30th September 2015.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>The study was based in the UK and Ireland.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>Clinician-reported data on young people aged 8\u201317 in contact with child and adolescent mental health services for a first episode of anorexia nervosa.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Main outcome measures<\/jats:title>\n                    <jats:p>Annual incidence rates (IRs) estimated as confirmed new cases per 100\u2009000 population at risk.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>305 incident cases of anorexia nervosa were reported over the 8-month surveillance period and assessed as eligible for inclusion. The majority were young women (91%), from England (70%) and of white ethnicity (92%). Mean age was 14.6 years (\u00b11.66) and mean percentage of median expected body mass index for age and sex was 83.23% (\u00b110.99%). The overall IR, adjusted for missing data, was estimated to be 13.68 per 100\u2009000 population (95%\u2009CI 12.88 to 14.52), with rates of 25.66 (95%\u2009CI 24.09 to 27.30) for young women and 2.28 (95%\u2009CI 1.84 to 2.79) for young men. Incidence increased steadily with age, peaking at 15 (57.77, 95%\u2009CI 50.41 to 65.90) for young women and 16 (5.14, 95%\u2009CI 3.20 to 7.83) for young men. Comparison with earlier estimates suggests IRs for children aged 12 and under have increased over the last 10 years.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>These results provide new estimates of the incidence of anorexia nervosa in young people. Service providers and commissioners should consider evidence to suggest an increase in incidence in younger children.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"ISRCTN12676087\">ISRCTN12676087<\/jats:ext-link>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2018-027339","type":"journal-article","created":{"date-parts":[[2019,10,23]],"date-time":"2019-10-23T00:05:10Z","timestamp":1571789110000},"page":"e027339","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":61,"title":["Incidence of anorexia nervosa in young people in the UK and Ireland: a national surveillance 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