Factors influencing lengths of stay in the intensive care unit for surviving trauma patients: a retrospective analysis of 30,157 cases

Table 3 Basic demographics and clinical characteristics of patients analyzed

	Valid cases^a	Mean ± SD	Median	Range
Age (years)	30,157	43.4 ± 19.9	42	6 to 103
ISS	30,157	21.9 ± 11.7	20	1 to 75
Invasive ventilation (d)	29,945	6.5 ± 10.1	2	0 to 120
ICU LOS (d)	30,157	11.5 ± 12.0	7	2 to 90
Hospital LOS (d)	29,990	27.2 ± 24.0	21	2 to 362

^aAbsolute number of cases with information on specific parameter available in the registry. ICU, intensive care unit; ISS, Injury Severity Score; LOS, length of stay; SD, standard deviation.

ISSN: 1364-8535