Table 1: Univariate analysis of risk factors of mortality.

Characters Survivors Non survivors P-value

Age
 >65 Y10% (N = 2) 34.6% (N = 9) 0.08
 <65 Y90% (N = 18) 65.4% (N = 17)
Gender
 Male45% (N = 9) 65.4% (N = 17) 0.16
 Female55% (N = 11) 34.6% (N = 9)
APACHE
 >2025% (N = 5) 69.2% (N = 18) 0.003
 <2075% (N = 15) 30.8% (N = 8)
Sepsis35% (N = 7) 61.5% (N = 16) 0.07
MOF (Multi organ failure)35% (N = 7) 92.3% (N = 24) <0.001
Refractory shock 0 53.8% (N = 14) <0.001
Refractory hypoxemia 0 57.7% (N = 15) <0.001