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Table 5 Hazard ratio for moderate a second injury in relation to first injury level of severity. The analyses were divided by gender and age group and adjusted for age (in years) within each age group

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

  Men Women
Age group 20–65 year 66 year and older 20–65 year 66 year and older
  HR 95 % CI HR 95 % CI HR 95 % CI HR 95 % CI
ISS 1–3 1.00   1.00   1.00   1.00  
ISS 4–8 1.46 (1.31–1.63) ns b   1.49 (1.32–1.69) 1.16 (1.03–131)
ISS 9 or more ns   1.41 (1.10–1.81) 2.14 (1.53–2.98) 1.25 (1.06–1.46)
  1. a Moderate is defined as an injury with at least ISS 4 level
  2. b ns not significant