{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T20:27:45Z","timestamp":1792787265288,"version":"4.5.0"},"reference-count":60,"publisher":"BMJ","issue":"4","funder":[{"DOI":"10.13039\/501100003035","name":"Aase og Ejnar Danielsens Fond","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003035","id-type":"DOI","asserted-by":"publisher"}]},{"name":"The Research Foundation, Rigshospitalet"},{"name":"The Danish Health Foundation"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2019,3,13]]},"published-print":{"date-parts":[[2019,4]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>Sickness absence after mild traumatic brain injury (mTBI) is frequent due to postconcussive symptoms. We examined labour market attachment following mTBI up to 5 years postinjury.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design and setting<\/jats:title>\n                    <jats:p>Nationwide cohort study with register follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>Patients between 18 and 60 years with mTBI (International Classification of Diseases, version 10 diagnosis S06.0) were extracted from the Danish National Patient Register (n=19 732). Controls were matched on sex, age and municipality (n=18 640). Patients with spinal cord and column injuries, traumatic brain injury and concussions 5\u2009years preinjury or as secondary diagnosis to the concussion in the inclusion period were excluded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Primary and secondary outcome measures<\/jats:title>\n                    <jats:p>Data were extracted from the Danish Register for Evaluation of Marginalization. Primary outcome was \u2018not attending ordinary work\u2019 defined as receiving any social transfer payment. Secondary outcomes were health-related benefits, limited attachment to the labour market, permanent lack of attachment to the labour market and death.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>5 years after diagnosis, 43% of patients were not attending ordinary work. The odds increased from 6 months (OR 1.30, 95%\u2009CI 1.24 to 1.36) to 5 years (OR 1.54, 95%\u2009CI 1.45 to 1.63). The odds of health-related benefits were 32% (OR 1.32, 95%\u2009CI 1.22 to 1.42) at 6 months and 22% (OR 1.22, 95%\u2009CI 1.12 to 1.33) at 5 years. Limited attachment to the labour market showed increased odds at 5 years (OR 1.38, 95%\u2009CI 1.27 to 1.51) and the odds of permanent lack of attachment to the labour market were higher for patients compared with controls (OR 2.59, 95%\u2009CI 2.30 to 2.92). Death was more than two times higher at 5 years postinjury (OR 2.62, 95%\u2009CI 2.10 to 3.26).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>43% of concussed patients were not attending ordinary work 5 years postinjury and received health and social transfer benefits. We conclude that mTBI has a long-term impact on labour market attachment. Prevention and treatment of persisting postconcussive symptoms should be considered.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>NCT03214432; Results<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2018-026104","type":"journal-article","created":{"date-parts":[[2019,4,11]],"date-time":"2019-04-11T16:57:17Z","timestamp":1555001837000},"page":"e026104","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":36,"title":["Labour market attachment after mild traumatic brain injury: nationwide cohort study with 5-year register follow-up in Denmark"],"prefix":"10.1136","volume":"9","author":[{"given":"Heidi Jeannet","family":"Graff","sequence":"first","affiliation":[{"name":"Department of Anaesthesia, Centre of Head and Orthopaedics, University Hospital Rigshospitalet, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Volkert","family":"Siersma","sequence":"additional","affiliation":[{"name":"Department of Public Health, The Research Unit for General Practice and Section of General Practice, University of Copenhagen, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"M\u00f8ller","sequence":"additional","affiliation":[{"name":"Department of Public Health, The Research Unit for General Practice and Section of General Practice, University of Copenhagen, Copenhagen, Denmark"},{"name":"Department of Occupational and Social Medicine, Copenhagen University Hospital Holbaek, Holbaek, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jakob","family":"Kragstrup","sequence":"additional","affiliation":[{"name":"Department of Public Health, The Research Unit for General Practice and Section of General Practice, University of Copenhagen, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lars L","family":"Andersen","sequence":"additional","affiliation":[{"name":"Musculoskeletal disorders and physical workload, National Research Centre for the Working Environment, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingrid","family":"Egerod","sequence":"additional","affiliation":[{"name":"Department of intensive care, Centre for Cancer and Organ Diseases, University Hospital Rigshospitalet, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hana","family":"Mal\u00e1 Rytter","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Copenhagen, Copenhagen, Denmark"},{"name":"Department of Neurology, University Hospital Bispebjerg-Frederiksberg, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2019,4,11]]},"reference":[{"key":"2025121408373820000_9.4.e026104.1","doi-asserted-by":"crossref","unstructured":"Carroll LJ , Cassidy JD , Holm L , et al . 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