Skip to main content

Table 2 Contingency tables of in-hospital mortality and need for ICU for MT patients for AIS98, AIS08 and AIS15. MT is considered ISS ≥ 16 in the upper three contingency tables, the lower two rows of contingency tables utilize alternative ISS thresholds for MT (AIS08 ≥ 11, AIS15 ≥ 12). Percentages are row orientated. ICU, combination of admission to an ICU (Intensive Care Unit), High Care Unit (HCU); or Medium Care Unit (MCU)

From: The definition of major trauma using different revisions of the abbreviated injury scale

In-hospital mortality
Using an ISS98 ≥ 16 threshold Using an ISS08 ≥ 16 threshold Using a ISS15 ≥ 16 threshold
  Died Survived Total   Died Survived Total   Died Survived Total
ISS < 16 208 16,912 17,120 ISS < 16 266 18,024 18,290 ISS < 16 267 18,009 18,276
1.2% 98.8%    1.5% 98.5%    1.5% 98.5%  
ISS ≥ 16 159 1057 1216 ISS ≥ 16 219 874 1093 ISS ≥ 16 218 889 1107
13.1% 86.9%    20.0% 80.0%    19.7% 80.3%  
Total 367 17,969 18,336 Total 485 18,898 19,383 Total 485 18,898 19,383
  Using an ISS08 ≥ 11 threshold Using a ISS15 ≥ 12 threshold
      Died Survived Total   Died Survived Total
     ISS08 < 11 258 17,363 17,621 ISS15 < 12 259 17,375 17,634
      1.5% 98.5%    1.5% 98.5%  
     ISS08 ≥ 11 227 1535 1762 ISS15 ≥ 12 226 1523 1749
      12.9% 87.1%    12.9% 87.1%  
     Total 485 18,898 19,383 Total 485 18,898 19,383
Need for ICU
Using an ISS98 ≥ 16 threshold Using an ISS08 ≥ 11 threshold Using a ISS15 ≥ 12 threshold
  ICU No ICU Total   ICU No ICU Total   ICU No ICU Total
ISS < 16 1008 16,112 17,120 ISS08 < 11 1067 16,554 17,621 ISS15 < 12 1083 16,551 17,634
5.9% 94.1%    6.1% 93.9%    6.1% 93.9%  
ISS ≥ 16 568 648 1216 ISS08 ≥ 11 824 938 1762 ISS15 ≥ 12 808 941 1749
46.7% 53.3%    46.8% 53.2%    46.2% 53.8%  
Total 1.576 16,760 18,336 Total 1891 17,492 19,383 Total 1891 17,492 19,383