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Table 3 Nature of Road Traffic Injury Cases (N = 1,656) by age groups, Japan, 2003

From: Clinical consequences of road traffic injuries among the elderly in Japan

Group 1 2 3
Age (years) 18 - 64 65 - 74 75 +
Cases 1459 119 78
Anatomic region (%)    
   Neck 45.4 * 18.5 18.9 ***
   Head 16.6 21.0 30.8 ***
   Chest 9.9 * 28.6 ** 10.3
   Abdominal 6.1 8.4 9.0
   Upper limb 10.6 5.9 11.5
   Lower limb 11.5 17.7 20.5
Outcome (% mortality) 0.9 2.5 6.4***
Hospital admission (%) 16.5 * 47.1 48.7 ***
ICU admission (%) 4.7 * 16.8 17.9 ***
Treatment (%)    
   None 86.4 * 68.9 70.5 ***
   Minor surgery 7.3 12.6 16.7 ***
   Elective surgery 5 * 14.3 7.7
   Emergency surgery 1.4 4.2 5.1
Injury Severity Score (ISS) (%)    
   Slight(ISS ≤ 3) 82.3 * 52.9 52.6 ***
   Moderate(ISS 4 - 8) 10.4 14.3 19.2
   Severe(≥ 9) 7.3 * 32.8 19.2 ***
Admission days (%)    
   Return home 83.5 * 52.9 51.3 ***
   Less than 7 days 4.0 6.7 10.3
   for 7 - 13 days 3.1 6.7 9.0
   for 14 - 27 days 3.9 12.5 6.5
   more than 28 days 5.6 * 21.0 23.1***
  1. * group 1 is significantly different (P ≤ 0.01) from group 2
  2. ** group 2 is significantly different (P ≤ 0.01) from group 3
  3. *** group 3 is significantly different (P ≤ 0.01) from group 1