Objective: To determine chronic traumatic encephalopathy (CTE)-related publication characteristics associated with higher Altmetric scores.Methods: A systematic review of the CTE literature was conducted using PubMed. Publications were coded for: journal impact factor (JIF); publication type (primary versus non-primary data collection); discussion of American football; contact sport-CTE association conclusion (yes versus no/neutral); and Altmetric score. Multivariable ordinal logistic regression identified predictors of higher Altmetric scores.Results: Most of the 270 CTE-related publications did not include primary data collection (60%). The median Altmetric score was 12 (range = 0-3745). Higher Altmetric scores were associated with primary data collection [Odds ratio (OR)Adjusted = 2.29; 95% confidence interval (CI) = 1.35-3.89] and discussing American football (ORAdjusted = 2.11; 95%CI = 1.24-3.59). Among publications concluding contact sport-CTE associations, higher Altmetric scores were associated with higher JIF (3-point-JIF-increase ORAdjusted = 2.11; 95%CI = 1.24-3.59); however, the association of higher Altmetric scores with higher JIF was not found among neutral publications or those concluding no contact sport-CTE associations (3-point-JIF-increase ORAdjusted = 1.07; 95%CI = 0.94-1.22).Conclusions: Most CTE-related publications (60%) did not involve primary data collection. Publication characteristics such as higher JIF and concluding contact sport-CTE associations were associated with higher Altmetric scores. It is important for the academic community to consider strategies to counter publication and promotion bias in the presentation of CTE literature.

中文翻译：

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从公共领域看慢性创伤性脑病研究：什么成为头条新闻？

目的：确定与较高 Altmetric 评分相关的慢性创伤性脑病 (CTE) 相关出版特征。方法：使用 PubMed 对 CTE 文献进行系统审查。出版物编码为：期刊影响因子（JIF）；出版物类型（主要与非主要数据收集）；美式足球的讨论；联系运动-CTE 协会结论（是与否/中立）；和 Altmetric 分数。多变量有序逻辑回归确定了 Altmetric 得分较高的预测因子。结果：270 篇 CTE 相关出版物中的大多数不包括原始数据收集 (60%)。Altmetric 得分中位数为 12（范围 = 0-3745）。较高的 Altmetric 分数与主要数据收集相关 [优势比 (OR) 调整 = 2.29；95% 置信区间 (CI) = 1.35-3。89] 并讨论美式足球（ORAdjusted = 2.11；95%CI = 1.24-3.59）。在总结接触运动 CTE 协会的出版物中，较高的 Altmetric 分数与较高的 JIF 相关（3 点 JIF 增加 ORAdjusted = 2.11；95%CI = 1.24-3.59）；然而，在中立出版物或得出无接触运动-CTE 关联的出版物中未发现较高的 Altmetric 分数与较高的 JIF 相关（3 点 JIF 增加 ORAdjusted = 1.07；95% CI = 0.94-1.22）。结论：大多数CTE 相关出版物 (60%) 不涉及原始数据收集。较高的 JIF 和结论性接触运动 CTE 关联等发表特征与较高的 Altmetric 分数相关。对于学术界来说，在 CTE 文献的展示中考虑应对出版和推广偏见的策略很重要。