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Table 3 Adjusted HRs for patients who survived longer than 6 months

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 1.15 1.06—1.24 <0.001
Male 1.34 1.29—1.38 <0.001
Patient age 1.10 1.096—1.101 <0.001
Socioeconomic status    
  Low 1 -- --
  Moderate 0.33 0.31—0.34 <0.001
  High 0.52 0.40—0.67 <0.001
Urbanization level    
  Urban 1 -- --
  Suburban 1.20 1.15—1.25 0.014
  Rural 1.82 1.74—1.91 0.027
Diabetes 1.53 1.48—1.59 <0.001
Hypertension 1.00 0.97—1.04 0.852
History of alcohol intoxication 1.95 1.63—2.33 0.766
Ischemic stroke 1.29 1.24—1.34 <0.001
Intracranial hemorrhage 1.85 1.68—2.05 <0.001
Malignancies 1.78 1.68—1.87 <0.001
Dementia 0.67 0.65—0.70 <0.001
Charlson comorbidity index score    
  0 1 -- --
  1 0.98 0.93—1.03 0.420
  ≥ 2 1.42 1.35—1.49 <0.001