{"title":"Revisiting the Common Misconceptions About Traumatic Brain Injury Scale (CM-TBI); What Does It Really Measure?","authors":"Christine Padgett, Hoang Nguyen, Peta S Cook, Olivia Hannon, Kathleen Doherty, Jenna Ziebell, Claire Eccleston","doi":"10.1097/HTR.0000000000001059","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>To examine the factor structure and validity of the 40-item common misconceptions in traumatic brain injury (CM-TBI) scale, and to develop and evaluate additional concussion-focussed items to broaden the instrument's scope.</p><p><strong>Method: </strong>A purposive sample of 988 participants from across all habitable continents (M age 43, range 16-90 years, 84% female) completed the CM-TBI and 5 additional concussion items at commencement of an online course on TBI.</p><p><strong>Results: </strong>Item analysis resulted in the removal of 19 items due to ambiguous wording and poor conceptual integrity, and/or low discrimination and low inter-item correlations. An exploratory factor analysis on the remaining 26 items revealed a 3-factor model had best fit, with an additional 8 items removed due to low or cross-loadings, low communalities, and/or low conceptual relevance, resulting in an 18-item revised scale.</p><p><strong>Conclusion: </strong>There is no psychometric support for the current structure of the CM-TBI. This is likely due to changes in understanding of TBI since the scale's inception, and issues of conceptual ambiguity. It is also proposed that a distinction must be made between knowledge and misconceptions, as these are 2 related but different constructs that are not clearly delineated in the current CM-TBI. Using the revised scale here offers researchers a more modern, focussed, and valid measure, but a new scale to measure knowledge and misconceptions in TBI is urgently needed.</p>","PeriodicalId":15901,"journal":{"name":"Journal of Head Trauma Rehabilitation","volume":" ","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Head Trauma Rehabilitation","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1097/HTR.0000000000001059","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Objective: To examine the factor structure and validity of the 40-item common misconceptions in traumatic brain injury (CM-TBI) scale, and to develop and evaluate additional concussion-focussed items to broaden the instrument's scope.
Method: A purposive sample of 988 participants from across all habitable continents (M age 43, range 16-90 years, 84% female) completed the CM-TBI and 5 additional concussion items at commencement of an online course on TBI.
Results: Item analysis resulted in the removal of 19 items due to ambiguous wording and poor conceptual integrity, and/or low discrimination and low inter-item correlations. An exploratory factor analysis on the remaining 26 items revealed a 3-factor model had best fit, with an additional 8 items removed due to low or cross-loadings, low communalities, and/or low conceptual relevance, resulting in an 18-item revised scale.
Conclusion: There is no psychometric support for the current structure of the CM-TBI. This is likely due to changes in understanding of TBI since the scale's inception, and issues of conceptual ambiguity. It is also proposed that a distinction must be made between knowledge and misconceptions, as these are 2 related but different constructs that are not clearly delineated in the current CM-TBI. Using the revised scale here offers researchers a more modern, focussed, and valid measure, but a new scale to measure knowledge and misconceptions in TBI is urgently needed.
期刊介绍:
The Journal of Head Trauma Rehabilitation is a leading, peer-reviewed resource that provides up-to-date information on the clinical management and rehabilitation of persons with traumatic brain injuries. Six issues each year aspire to the vision of “knowledge informing care” and include a wide range of articles, topical issues, commentaries and special features. It is the official journal of the Brain Injury Association of America (BIAA).