Cohort characteristics at baseline.

The first (prospective) cohort was matched according to TBI at baseline, and the risk of dementia was investigated during follow-up; the second cohort consisted of siblings with discordant TBI at baseline; the third (retrospective) cohort was matched according to dementia during follow-up, and diagnoses of TBI were investigated.

本研究第一个队列（前瞻性队列）按照基线时的创伤性脑损伤（Traumatic Brain Injury, TBI）进行匹配，于随访期间调查痴呆的发病风险；第二个队列由基线时创伤性脑损伤状态不一致的同胞组成；第三个队列（回顾性队列）按照随访期间的痴呆诊断情况进行匹配，对创伤性脑损伤的确诊情况展开调查。