ABSTRACT

Objective: To assess the concurrent validity and test re-test reliability of the Michigan Traumatic Brain Injury Identification Method (MTBIIM). The psychometric properties of this concussion index were investigated by comparing the agreement between player self-reported diagnosed concussions and medical record diagnosed concussions among professional rugby union players.

Study Design: Cross-sectional study i) validation and ii) test re-test reliability.

Methods: The MTBIIM was administered via a structured interview to obtain the number and nature of player self-reported concussion histories from players, while contracted to the host club. Self-reported concussion history information was compared to medically recorded data captured between 2008 and 2017. A mixed-effects logistic regression model explored predictors of player self-report accuracy.

Results: Data from 62 players (25.39[4.36] years) included 99 unique rugby related concussions. Medically documented concussions (n = 92) per player (1.48 [1.96]) were 30% more than the mean number of self-reported diagnosed (n = 63) concussions per player (1.02 [1.21] events). Overall, self-reported diagnosed concussions and medical record diagnosed concussion histories had a ‘fair’ level of agreement (k=0.274; SE [0.076]), p=.001). Self-reported lifetime concussion history was signicantly negatively correlated with recall of concussions.

Conclusions: Initial concurrent validity of the MTBIIM was found to be fair with the average athlete under-reporting the number of clinically diagnosed concussions.

摘要

目的：评估密歇根创伤性脑损伤鉴定方法 (MTBIIM) 的同时效度和重测信度。通过比较职业橄榄球联盟球员自报诊断的脑震荡和病历诊断的脑震荡之间的一致性，研究了该脑震荡指数的心理测量特性。

研究设计：横断面研究 i) 验证和 ii) 测试再测试可靠性。

方法：MTBIIM 通过结构化访谈进行管理，以获取与东道主俱乐部签约的球员自报脑震荡史的数量和性质。将自我报告的脑震荡病史信息与 2008 年至 2017 年期间捕获的医学记录数据进行了比较。混合效应逻辑回归模型探索了球员自我报告准确性的预测因素。

结果：来自 62 名球员（25.39[4.36] 岁）的数据包括 99 次与橄榄球相关的脑震荡。每位球员有医学记录的脑震荡 (n = 92) (1.48 [1.96]) 比每位球员自我报告诊断的脑震荡 (n = 63) 平均数 (1.02 [1.21] 次)多 30%。总体而言，自我报告诊断的脑震荡和病历诊断的脑震荡史具有“公平”的一致性（k=0.274；SE [0.076]），p=.001）。自我报告的终生脑震荡史与脑震荡回忆显着负相关。

结论：MTBIIM 的初始并发有效性被发现是公平的，平均运动员少报临床诊断脑震荡的数量。