Table 4 Multivariate analysis for risk factors associated with ICU mortality during the 2009 pandemic and post-pandemic Influenza (H1N1)v infection period.

APACHE II score

1.076

1.040 to 1.114

<0.001

Hematologic disease

3.506

1.747 to 7.038

<0.001

Continuous renal replacement therapy

5.812

3.101 to 10.893

<0.001

Invasive mechanical ventilation

6.890

3.538 to 13.418

<0.001

HIV infection in pandemic Influenza (H1N1)v infection period *

1.362

0.279 to 6.648

0.702

HIV infection in post-pandemic Influenza (H1N1)v infection period *

19.835

2.236 to 175.954

0.007