School of Psychology, University of Ottawa, Ontario, Canada.
Bruyère Research Institute, Ottawa, Ontario, Canada.
J Gerontol B Psychol Sci Soc Sci. 2021 Oct 30;76(9):1777-1787. doi: 10.1093/geronb/gbaa213.
We investigated rates of cognitive decline at 3-year follow-up from initial examination in people reporting mild traumatic brain injury (mTBI) with loss of consciousness (LOC) more than a year prior to initial examination. We examined the role of social support as predictor of preserved cognitive function in this sample.
Analyses were conducted on 440 participants who had self-reported LOC of <1 min, 350 with LOC of 1-20 min, and 10,712 healthy controls, taken from the Canadian Longitudinal Study on Aging (CLSA), a nationwide study on health and aging.
People who reported at baseline that they had experienced mTBI with LOC of 1-20 min more than a year prior were 60% more likely to have experienced global cognitive decline than controls at three-year follow-up. Cognitive decline was most apparent on measures of executive functioning. Logistic regression identified increased social support as predictors of relatively preserved cognitive function.
mTBI with longer time spent unconscious (i.e., LOC 1-20 min) is associated with greater cognitive decline years after the head injury. Perceived social support, particularly emotional support, may help buffer against this cognitive decline.
我们调查了在初始检查前一年以上报告有轻度创伤性脑损伤（mTBI）和意识丧失（LOC）的人在初始检查后 3 年随访时认知能力下降的比率。我们研究了社会支持作为该样本中保持认知功能的预测因素的作用。
对来自加拿大老龄化纵向研究（CLSA）的 440 名自我报告有 LOC <1 分钟、350 名有 LOC 为 1-20 分钟和 10712 名健康对照者进行了分析，这是一项关于健康和老龄化的全国性研究。
基线时报告有 LOC 为 1-20 分钟且超过一年前发生 mTBI 的人在 3 年随访时经历全面认知下降的可能性比对照组高 60%。认知下降在执行功能测量上最为明显。逻辑回归确定了增加的社会支持是相对保留认知功能的预测因素。
较长时间无意识（即 LOC 为 1-20 分钟）的 mTBI 与头部受伤后数年的认知能力下降有关。感知到的社会支持，特别是情感支持，可能有助于缓冲这种认知下降。
