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)

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