Table 1 Baseline clinical patient characteristics

Age, mean ± SEM

84.00 ± 0.65

89.20 ± 0.97

 < 0.001

Male sex, n (%)

38 (37.3%)

18 (38.3%)

0.907

Hypertension, n (%)

73 (73.0%)

34 (73.9%)

0.908

Diabetes, n (%)

27 (27.0%)

9 (19.6%)

0.333

COPD, n (%)

11 (11.0%)

11 (23.9%)

0.043

IHD, n (%)

11 (11.0%)

8 (17.4%)

0.286

AF, n (%)

26 (26.0%)

17 (37.0%)

0.177

Dementia, n (%)

31 (31.0%)

14 (30.4%)

0.945

CKD, n (%)

22 (21.5%)

17 (36.2%)

0.072

Respiratory insufficiency, n (%)

64 (62.7%)

43 (91.4%)

 < 0.001

Fever, n (%)

48 (47.0%)

24 (51.5%)

0.725

Cough, n (%)

31 (30.4%)

6 (12.7%)

0.020

CFS n (%)

0–3

20 (19.6%)

(4.3%)

0.035

4–7

51 (50.0%)

24 (51.1%)

8–9

29 (28.4%)

21 (44.7%)

na

2 (2.0%)

0 (0.0%)

CRP (mg/L), mean ± SEM^a

5.15 ± 0.73

9.32 ± 1.05

 < 0.001

Lymphocytes (10³/µL), mean ± SEM^a

1.41 ± 0.10

1.03 ± 0.15

0.004

Neutrophils (10³/µL), mean ± SEM^a

5.38 ± 0.47

8.73 ± 0.68

 < 0.001

NLR, mean ± SEM^a

4.87 ± 1.09

13.60 ± 1.56

 < 0.001

Fibrinogen (mg/dL), mean ± SEM^a

433 ± 17

460 ± 27

0.275

D-dimer (ng/mL), mean ± SEM^a

1782 ± 371

2725 ± 601

0.130

Procalcitonin (ng/mL), mean ± SEM^a

0.13 ± 0.35

2.29 ± 0.61

0.001

BB-DNA (ng/mL), mean ± SEM^a

19.0 ± 8.7

49.7 ± 11.4

0.015