{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T04:14:25Z","timestamp":1776312865458,"version":"3.50.1"},"reference-count":18,"publisher":"Korean Society of Epidemiology","funder":[{"DOI":"10.13039\/501100022609","name":"Drake Foundation","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100022609","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100009660","name":"London School of Hygiene and Tropical Medicine","doi-asserted-by":"publisher","award":["EPMSZJ20-10"],"award-info":[{"award-number":["EPMSZJ20-10"]}],"id":[{"id":"10.13039\/100009660","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009148","name":"Queen Mary University of London","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100009148","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Institute of Occupational Medicine"}],"content-domain":{"domain":["e-epih.org"],"crossmark-restriction":true},"short-container-title":["Epidemiol Health"],"abstract":"<jats:p>OBJECTIVES: The BRAIN-Q is a tool aimed at maximising the accuracy and minimising measurement error for retrospectively assessing concussions. This paper reports the agreement of the BRAIN-Q tool when compared to extant questionnaire questions, and its reproducibility when compared with its telephonic version (tBRAIN-Q).METHODS: The BRAIN-Q entails a 3-stage process: defining a concussion, creating a visual timeline with life events, and establishing detailed characteristics for each reported concussion. It was designed to be administered in-person by trained personnel, and was used in the BRAIN study. Its performance was compared with the MSK study, which previously collected a few questions in a broader self-administered questionnaire, and with the tBRAIN-Q Recall, its telephonic version.RESULTS: In total, 101 participants were included, of whom 9 were re-assessed with the tBRAIN-Q. The agreement of the BRAIN-Q with the muscle skeletal-questionnaire for rugby-related concussion was 86.7% (\u03ba=0.6). Rugby-related concussion with loss of consciousness showed lower agreement (82.0%; \u03ba=0.6). The comparison between the BRAIN-Q and the tBRAIN-Q showed good reproducibility.CONCLUSIONS: The BRAIN-Q is a relatively easy tool to administer in face-to-face assessments, and it showed optimal reproducibility. It includes a well-established definition of concussion, and is used to collect detailed information on each concussion, allowing for a number of subgroup analyses (e.g., by severity, age, or context). The BRAIN-Q is easily adaptable to other sporting settings.<\/jats:p>","DOI":"10.4178\/epih.e2021086","type":"journal-article","created":{"date-parts":[[2021,10,21]],"date-time":"2021-10-21T05:04:18Z","timestamp":1634792658000},"page":"e2021086","update-policy":"https:\/\/doi.org\/10.4178\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The BRAIN-Q, a tool for assessing self-reported sport-related concussions for epidemiological 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