Causes and Outcomes of Legal Intervention Injuries in Cook County

Excluding Chicago

Key data notes

  • Because of the national change in coding from ICD-9 to ICD-10 in the fourth quarter of 2015, the final quarter of 2015 is excluded from this analysis.
  • The total number of injuries in the "Causes of injury" section exceeds 8,384 because some patients may have more than one cause of injury listed.
  • Late effects refers to the onset of medical conditions after the acute phase of an earlier, causal condition has run its course.
Total in Illinois Cook County Outpatient Share of outpatients Cook County Inpatient Share of inpatients
Total injuries, 2010-15 8,384 1,393 56
Cause of injury Firearms 247 29 2.1% 10 17.9%
Explosives 2 0 0.0% 0 0.0%
Gas 71 9 0.6% 0 0.0%
Blunt objects (batons, flashlights) 234 54 3.9% 0 0.0%
Piercing instrument 198 28 2.0% 0 0.0%
Blows or manhandling 6,531 1,090 78.2% 22 39.3%
Unspecified means 897 155 11.1% 6 10.7%
Late effects 224 33 2.4% 18 32.1%
Clinical outcomes Treated in a level I or II facility 3,834 591 42.4% 56 100.0%
Mean length of hospitalization (days) 6.1
Penetrating injuries 561 65 4.7% 10 17.9%
Required surgical intervention 222 8 0.6% 16 28.6%
Required mechanical ventilation 36 0 0.0% 2 3.6%
Discharged to court/law enforcement 1,038 189 13.6% 4 7.1%
Died 15 4 0.3% 0 0.0%