Table 1 Patient characteristics

Age (years) mean (SD)

67.3 (19.9)

60.1 (20.5)

<  0.001

Age group n (%)

<  0.001

 <  40

219 (13.4)

46 (21.3)

 40–59

261 (16.0)

49 (22.7)

 60–79

595 (36.5)

79 (36.6)

 >  80

555 (34.1)

42 (19.4)

Females n (%)

827 (52.6)

102 (55.4)

0.473

CCI mean (SD)

1.30 (1.61)

1.33 (1.85)

0.648

Smokers n (%)

779 (47.8)

87 (40.3)

<  0.038

Diabetes n (%)

407 (24.9)

45 (20.8)

0.0184

COPD n (%)

447 (27.4)

44 (20.4)

<  0.027

Asthma n (%)

110 (6.8)

15 (6.9)

0.914

ILD n (%)

16 (0.8)

4 (1.9)

0.246

CKD n (%)

17 (1.0)

1 (0.4)

0.415

IHD n (%)

307 (18.8)

24 (11.1)

<  0.005

Malignancy n (%)

181 (11.1)

28 (12.9)

0.418

Immunosuppression n (%)

7 (0.4)

3 (1.4)

0.071

^ahsTnT mean (SD)

76.6 (379.5)

55.9 (88.4)

0.614

^bCreatinine mean (SD)

107.8 (105.8)

103.9 (114.1)

0.626

^cC-RP mean (SD)

60. 2 (71.9)

42.9 (64.2)

0.002

Antiviral treatment n (%)

415 (25.7)

33 (15.6)

0.001