Table 5 Predictors of in-hospital mortality among critically ill patients with H1N1pdm09

Age (1-year increase)

1.02 (1.01–1.04)

0.002

1.02 (1.00–1.03)

0.15

Female sex

0.94 (0.61–1.38)

0.77

0.92 (0.56–1.50)

0.73

Corticosteroid

1.82 (1.21–2.74)

0.004

1.85 (1.12–3.04)

0.02

APACHE II score (1-point increase)

1.07 (1.05–1.11)

<0.001

1.07 (1.04–1.10)

<0.001

PaO₂/F_iO₂ ratio (cmH₂O), day 1

1.00 (0.99–1.00)

0.004

0.99 (0.99–1.00)

0.06

Asthma

0.64 (0.37–1.11)

0.12

0.64 (0.33–1.26)

0.20

Autoimmune disease

3.21 (0.85–12.13)

0.09

3.02 (0.75–12.20)

0.12

Bacterial coinfection at admission

1.45 (0.96–2.20)

0.08

1.20 (0.72–1.98)

0.48