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Table 3 Hazard ratio for moderate a second injury in relation to different age groups (age at first injury). The analyses were divided by gender

From: Trauma recidivism at an emergency department of a Swedish medical center

  Men Women
HR 95 % CI HR 95 % CI
Age groups, years
 20–29 year 1.00    1.00   
 30–39 year 0.76 0.68 0.86 ns   
 40–49 year 0.82 0.72 0.93 1.39 1.18 1.64
 50–59 year ns b    2.09 1.81 2.42
 60–69 year ns    2.73 2.36 3.16
 70–79 year 1.89 1.65 2.16 4.82 4.22 5.50
 80–89 year 3.00 2.58 3.48 7.20 6.32 8.22
 90 and older 6.04 4.50 8.11 9.66 7.97 11.72
  1. a Moderate is defined as an injury with at least ISS 4 level
  2. b ns not significant