Table 4 Logistic regression analysis of the association between minimal COHb level and ICU mortality

COHb minimum, %

0.6 (0.4 to 0.8)

0.001

SAPSII score

1.0 (1.0 to 1.0)

< 0.001

Cardiovascular failure on ICU admission, yes/no

2.2 (1.6 to 3.3)

< 0.001

Renal failure on ICU admission, yes/no

1.8 (1.2 to 2.6)

0.003

Hepatic failure on ICU admission, yes/no

1.8 (1.2 to 2.7)

0.003