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Table 2 Adjusted HRs for patients followed from baseline to study end

From: Higher mortality rates among the elderly with mild traumatic brain injury: a nationwide cohort study

Variables Hazard ratio 95% confidence interval P-value
Mild TBI 1.25 1.16—1.34 <0.001
Male 1.32 1.28—1.36 <0.001
Patient age 1.10 1.097—1.110 <0.001
Socioeconomic status    
  Low 1 -- --
  Moderate 0.30 0.28—0.31 <0.001
  High 0.53 0.41—0.67 <0.001
Urbanization level    
  Urban 1 -- --
  Suburban 1.20 1.16—1.25 0.014
  Rural 1.86 1.78—1.94 0.027
Diabetes 1.53 1.48—1.58 <0.001
Hypertension 1.00 0.97—1.04 0.962
History of alcohol intoxication 2.05 1.75—2.42 0.766
Ischemic stroke 1.29 1.25—1.34 <0.001
Intracranial hemorrhage 1.87 1.71—2.05 <0.001
Malignancies 1.98 1.89—2.08 <0.001
Dementia 0.68 0.65—0.70 <0.001
Charlson comorbidity index score    
  0 1 -- --
  1 1.00 0.95—1.05 0.974
  ≥ 2 1.46 1.40—1.53 <0.001