Table 6.

Independent risk factors for death of critically ill patients

	Relative risk	95% CI	p value
Death in the ICU
Central nervous system failure	16.07	8.2 to 31.4	<0.001
Cardiovascular failure	11.83	5.2 to 27.1	<0.001
Acute renal failure	2.7	1.7 to 4.3	<0.001
Admission from recovery room	2.2	1.4 to 3.4	<0.001
Malignant tumour disease	2.19	1.4 to 3.4	<0.001
Death in the hospital
Neurosurgery	6.75	3.3 to 13.8	0.015
Non-surgical, internal disease	6.75	3.3 to 13.8	<0.001
Abdominal surgery	5.09	3.2 to 8.2	<0.001
Central nervous system failure	5.08	2.2 to 11.6	<0.001
Cardiovascular failure	3.85	2.1 to 6.9	<0.001
Death within one year after ICU admission
Number of admissions to the ICU	11.84	4.3 to 32.5	<0.001
Acute renal failure	2.97	1.2 to 7.6	0.024
Number of pre-existent diseases	1.41	1.1 to 1.7	0.001
SAPS II (per unit increase)	1.12	1.1 to 1.2	<0.001

CI, confidence interval; ICU, intensive care unit; SAPS, Simplified Acute Physiology Score.