Table 1 Main patients' characteristics on ICU admission

Mean age, yr (±SD)

62.8 (±9.9)

Male/female ratio

71/23

Mean SAPS (±SD)

51.1 (±2.12)

Mean SOFA score (±SD)

8.32 (±1.12)

Diagnosis on ICU admission, no. (%)

Medical

68 (72.3)

Surgical

Abdominal surgery

25 (26.6)

16 (17)

Trauma

1 (1.1)

Underlying diseases, no. (%)

Congestive severe heart failure

15 (16)

Insulin-dependent diabetes mellitus

11 (11.7)

Chronic obstructive pulmonary disease

26 (27.7)

Chronic liver disease

12 (12.8)

Chronic neurologic disease

10 (10.6)

Chronic renal failure

11 (11.7)

Immunosuppression

9 (9.6)