Initial model

Final model

OR

IC_95%

p¹

ORa

ICa_95%

p²

Age ≥ 65 years

1.99

[0.89 - 4.42]

0.09

2.42

[1.17 - 4.95]

0.016

Severity at the entrance

Asymptomatic

-

-

-

-

Mild

6.99

[1.22 - 1.33]

0.072

7.13

[1.31 - 1.33]

0.065

Moderate

11.3

[1.78 - 2.21]

0.03

13

[2.30 - 2.44]

0.017

Severe

18.8

[2.97 - 3.71]

0.009

26.2

[4.85 - 4.93]

0.002

Critical

78.9

[9.44 - 17.71]

<0.001

108

[16.5 - 21.76]

<0.001

Anemia

No

-

-

-

-

Yes

2.63

[1.20 - 5.88]

0.016

2.49

[1.21 - 5.26]

0.015