Independent risk factors of hospital death.

CI 95%, 95% confidence interval for Hazard ratio; SOFA, sequential organ failure assessment;*,The day of intubation and beginning of invasive mechanical ventilation.Backward multivariate Cox regression analysis adjusted using a propensity score (quartiles). Variables entered into the model: propensity score, alcoholism, receiving corticosteroids at the time of intubation, receiving antibiotics at the time of intubation; the day of intubation: blood urea nitrogen, serum glucose, mean arterial pressure, white blood cell count, SOFA score; and a delay between CAP onset and mechanical ventilation >3 days.