Critically ill patient mortality by age: long-term follow-up (CIMbA-LT)

Annals of Intensive Care

Table 3 Mortality rate by Age Group according to their risk at ICU admission

Age group	N	Predicted Hospital Mortality^a (%)	ICU Mortality (%)	Hospital Mortality (%)	Hospital SMR^b	1 Year SMR^b	2-Years SMR^b
18–50 Adult	7632	20.7	9.4	13.1	0.63	0.99	1.07
≥ 50–65 Senior	9933	30.2	15.2	21.4	0.71	1.01	1.14
≥ 65–80 Old	13,667	39.6	18.5	27.9	0.70	0.98	1.11
≥ 80 Very-Old	5886	44.4	20.8	33.5	0.76	1.08	1.24
Total	37,118	34	16.1	24	0.71	1.01	1.14

Evaluation of mortality relative risk at hospital discharge, one-year, and two-year follow-up (in the two years of follow-up only the 29,661 patients with complete data were considered)
ICU intensive care unit, SMR standard mortality ratio
^aHospital mortality predicted according to the Simplified Acute Physiology Score II
^bSMR calculated from mortality data at hospital discharge, one and two years of follow-up (see text for details)