Demographics, underlying disease/condition, and clinical characteristics of patients with severe hospital-acquired pneumonia.

HAP = hospital-acquired pneumonia; APACHE = Acute Physiology and Chronic Health Evaluation; SOFA = Sequential Organ Failure Assessment.aThe immunocompromised state was verified if the patients: (i) had daily administration of corticosteroids (at least 5 mg per day of prednisolone or an equivalent drug), (ii) were solid organ or hematopoietic stem cell transplant recipients, (iii) had received treatment with chemotherapy for an underlying malignancy during the 6 months prior to ICU admission, and (iv) had an underlying acquired immune deficiency disorder.