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A key requirement for such approaches is that attachment patterns remain relatively stable during the post\u2010injury illness course, allowing them to serve as reliable indicators for guiding initial care and treatment planning. This study aimed to assess the stability of self\u2010reported attachment anxiety and attachment avoidance in individuals aged 15\u201330\u2009years, from three (T1) to nine (T2) months after a concussion, corresponding to the period when treatment for PCS typically becomes relevant. This study is a methodological follow\u2010up of a larger clinical cohort study comprising 3080 individuals aged 15\u201330\u2009years who were diagnosed with a concussion. Attachment dimensions were measured using the Experiences in Close Relationships\u2010Relationship Structures Questionnaire at three (T1) and nine (T2) months post\u2010injury. Both mean\u2010level and individual changes were examined, taking relevant covariates such as sex, age, level of PCS, post\u2010traumatic stress disorder symptoms, and social support into account. At T1, 958 respondents were included (39%), with 416 also responding at T2 (43%). Mean\u2010level changes were minimal (attachment anxiety: <jats:italic>\u03b2<\/jats:italic>\u2009=\u2009\u22120.07 (95% confidence interval [CI]: \u22120.22; 0.08)), attachment avoidance: <jats:italic>\u03b2<\/jats:italic>\u2009=\u20090.00 (95% CI: \u22120.11; 0.11). Larger individual changes that could not be explained by measurement error were observed in 12% of participants. No association was found with any of the covariates. Self\u2010reported attachment patterns appear to remain stable in most young people with a concussion from 3 to 9\u2009months post\u2010injury. The findings strengthen confidence in conducting research to investigate whether attachment\u2010informed treatment approaches can improve healthcare for these patients.<\/jats:p>","DOI":"10.1111\/sjop.13094","type":"journal-article","created":{"date-parts":[[2025,2,20]],"date-time":"2025-02-20T22:13:57Z","timestamp":1740089637000},"page":"459-472","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Is Self\u2010Report of Attachment Patterns in Young People Stable From Three to Nine Months After a Concussion?"],"prefix":"10.1111","volume":"66","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7663-7516","authenticated-orcid":false,"given":"Astrid","family":"Tuborgh","sequence":"first","affiliation":[{"name":"Department of Child and Adolescent Psychiatry, Research Unit Aarhus University Hospital  Aarhus Denmark"},{"name":"Department of Clinical Medicine Aarhus University  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susanne Wulff","family":"Svendsen","sequence":"additional","affiliation":[{"name":"Hammel Neurorehabilitation Centre and University Research Clinic Aarhus University  Aarhus Denmark"},{"name":"Danish Ramazzini Centre, Department of Occupational Medicine Regional Hospital West Jutland\u2013University Research Clinic  Herning Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8469-7372","authenticated-orcid":false,"given":"Ask","family":"Elklit","sequence":"additional","affiliation":[{"name":"Department of Psychology, National Centre of Psycho\u2010Traumatology University of Southern Denmark  Odense Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jon","family":"Hunter","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Sinai Health System University of Toronto  Toronto Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jens S\u00f8ndergaard","family":"Jensen","sequence":"additional","affiliation":[{"name":"Research Clinic for Functional Disorders and Psychosomatics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva","family":"\u00d8rnb\u00f8l","sequence":"additional","affiliation":[{"name":"Research Clinic for Functional Disorders and Psychosomatics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andreas","family":"Schr\u00f6der","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine Aarhus University  Aarhus Denmark"},{"name":"Research Clinic for Functional Disorders and Psychosomatics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J\u00f8rgen Feldb\u00e6k","family":"Nielsen","sequence":"additional","affiliation":[{"name":"Hammel Neurorehabilitation Centre and University Research Clinic Aarhus University  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mille M\u00f8ller","family":"Thastum","sequence":"additional","affiliation":[{"name":"Hammel Neurorehabilitation Centre and University Research Clinic Aarhus University  Aarhus Denmark"},{"name":"Research Clinic for Functional Disorders and Psychosomatics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erhard Trillingsgaard","family":"N\u00e6ss\u2010Schmidt","sequence":"additional","affiliation":[{"name":"Hammel Neurorehabilitation Centre and University Research Clinic Aarhus University  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Charlotte Ulrikka","family":"Rask","sequence":"additional","affiliation":[{"name":"Department of Child and Adolescent Psychiatry, Research Unit Aarhus University Hospital  Aarhus Denmark"},{"name":"Department of Clinical Medicine Aarhus University  Aarhus Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,2,20]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.3402\/ejpt.v2i0.5633"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpsychores.2018.06.002"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpsychores.2019.01.008"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1155\/2014\/838954"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/00001199-200605000-00005"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/02699052.2020.1797168"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/HTR.0000000000000682"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1080\/02688697.2019.1598542"},{"volume-title":"Attachment and Loss: Vol 2. 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