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Table 1 Demographic data of the population.

From: Causes and characteristics of death in icu: a national study

  Population of the study Expected death (n=473) Unexpected death (n=225) p values
Age (years) 69 [57-78] 69 [57-78] 68 [56-77] 0.32
SAPS II 63 [48-83] 60 [47-76] 77 [52-93] < 0.001
SOFA score 11 [7-13] 10 [7-13] 12 [9-15] < 0.001
Admission causes     
Cardiovascular 193 (28%) 103 (22%) 90 (40%) < 0.001
Respiratory 182 (26%) 127 (27%) 55 (24%) 0.50
Neurologic 169 (24%) 149 (32%) 20 (9%) < 0.001
Miscellaneous 154 (22%) 94 (19%) 60 (27%) 0.28
Length of stay (d) 3 [1-10] 5 [2-12] 1 [0-8] < 0.001