Hazard Ratio and Repeat Injury for Dementia in Patients With and Without a History of Traumatic Brain Injury: A Population-Based Secondary Data Analysis in Taiwan.
The impact of traumatic brain injury (TBI) on the pathogenic hazard ratio (HR) for dementia patients is still controversial. Some studies have supported the association between TBI and dementia, especially for Alzheimer's disease, and our study determined that the HR of dementia patients with and without a history of TBI or repeated TBI (RTBI). We determined the HR for dementia patients with a diagnosis of TBI (n = 12931) and a comparative cohort with age- and gender-matched controls (n = 51724) during 2004-2005, using Taiwan's National Health Insurance Research Database. The adjusted HR (HR = 3.21) for dementia patients with TBI showed that they were more likely to develop dementia than the comparison cohort. The HR for dementia patients with RTBI was increased to 3.62. The results of this large-scale study suggested that TBI increases dementia risk. Future studies using animal models and epidemiological databases could elucidate medical and biological mechanisms linking TBI and the development of dementia.
School of Public Health, College of Public Health and Neutrition, Taipei Medical University, Taipei, Taiwan.
Shu-Fen
SF
Chu
Graduate Institute of Injury Prevention and Control, College of Public Health and Neutrition, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan.
Wen-Ta
WT
Chiu
Department of Mathematics, Soochow University, Taipei, Taiwan.
Hui-Wen
HW
Lin
Department of Neurosurgery, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan.
Yung-Hsiao
YH
Chiang
Department of Rehabilitation, School of Medicine, College of Medicine, Taipei Medical University Department of Rehabilitation, Shuang Ho Hospital, Taipei Medical University peter_liou@s.tmu.edu.tw.
Tsan-Hon
TH
Liou
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D000070642:Brain Injuries, Traumatic / Q000453:epidemiology*; D016022:Case-Control Studies; D016208:Databases, Factual; D003704:Dementia / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D012306:Risk; D013624:Taiwan / Q000453:epidemiology; D055815:Young Adult
dementia; hazard ratio; population-based study; repeated injury; traumatic brain injury