Table 1 Characteristics of patients on admission to the intensive care unit

Age in years (mean ± SD)

59 ± 20

63 ± 19

46 ± 20

0.048

Male, n (%)

22 (71.0)

15 (65.2)

7 (87.3)

0.379

Body mass index in kg/m² (mean ± SD)

29.8 ± 7.6

29.3 ± 7.1

31.2 ± 9.2

0.707

 APACHE II score

24.2 ± 9.5

26.4 ± 8.5

17.8 ± 9.7

0.034

 SOFA score

10.7 ± 3.5

11.7 ± 3.1

8.0 ± 3.2

0.01

Acquisition of pneumonia, n (%)

0.689

 Community-acquired

18 (58.1)

14 (60.9)

4 (50.0)

 Hospital-acquired

13 (41.9)

9 (39.1)

4 (50.0)

 Diabetes mellitus

17 (54.8)

13 (56.5)

4 (50.0)

1.00

 Arterial hypertension

16 (51.6)

14 (60.9)

2 (25.0)

0.113

 Immunosuppressive drugs

7 (22.6)

5 (21.7)

2 (25.0)

1.00

 Chronic heart failure

6 (19.4)

4 (17.4)

2 (25.0)

1.00

 Chronic kidney disease

6 (19.4)

4 (17.4)

2 (25.0)

0.634

 Cerebrovascular accidents

5 (16.1)

4 (17.4)

1 (12.5)

1.00

 Coronary artery disease

4 (12.9)

3 (13.0)

0 (0.0)

1.00

 Steroid use

3 (9.6)

3 (13.0)

0 (0.0)

0.161

 COPD

3 (9.7)

2 (8.7)

1 (12.5)

1.00

 Smoking

3 (9.7)

1 (4.3)

2 (25.0)

0.156

 Chronic liver disease

3 (9.7)

3 (13.0)

0 (0.0)

0.550

 Hypothyroid

3 (9.7)

3 (13.0)

0 (0.0)

0.550

 Cancer

2 (6.5)

2 (8.7)

0 (0.0)

1.00

 Epilepsy

2 (6.5)

1 (4.3)

1 (12.5)

0.456

 Dyslipidemia

1 (3.2)

1 (4.3)

0 (0.0)

1.00

 Asthma

1 (3.2)

1 (4.3)

0 (0.0)

1.00

 Bronchiectasis

1 (3.2)

1 (4.3)

0 (0.0)

1.00

 Obstructive sleep apnea

1 (3.2)

1 (4.3)

0 (0.0)

1.00

Number of comorbidities, median (IQR)

3 (2–4)

3 (2–4)

3 (1–4)

0.580

ICU mortality, n (%)

23 (74.2)

23 (100)

-

NA

ICU length of stay in days [median, (IQR)]

9 (4–16)

10 (4–16)

9 (4–17)

0.912

Hospital length of stay in days [median, (IQR)]

12 (4–16)

10 (4–16)

18 (14–72)

0.002