Table 2. Adjusted Hazard Ratios (HR) of Dementia Because of mTBI.

Variables	Hazard ratio	95% confidence interval	P-value
mTBI	3.26	2.69–3.94	<0.001
Male	0.65	0.57–0.73	<0.001
Patient age	1.12	1.11–1.12	<0.001
Charlson Comorbidity Index Score
0	1	–	–
1	1.29	1.06–1.56	0.01
≥2	1.47	1.21–1.79	<0.001
Diabetes	1.47	1.27–1.69	<0.001
Hypertension	1.06	0.92–1.22	0.445
Coronary artery disease	1.00	0.87–1.15	0.995
Hyperlipidemia	0.90	0.78–1.04	0.157
History of alcohol intoxication	1.12	0.53–2.36	0.766
Ischemic stroke	2.05	1.43–2.94	<0.001
Intracranial hemorrhage	1.43	1.24–1.66	<0.001
Socioeconomic status
Low	1	–	–
Moderate	0.73	0.62–0.84	<0.001
High	0.26	0.13–0.52	0.002
Urbanization level
Urban	1	–	–
Suburban	1.22	1.04–1.42	0.014
Rural	1.22	1.02–1.45	0.027