factor

Regression coefficients

Standard confidence

Forest

P

Exp (B)

95%

Interval CI

age

0.071

0.020

12.197

<0.001

1.073

1.032 - 1.117

WBC (×109/L)

−0.304

0.097

9.728

0.002

0.738

0.610 - 0.893

cough

−1.478

0.634

5.438

0.020

0.228

0.066 - 0.790

Sore throat

−1.830

0.875

4.371

0.037

0.160

0.029 - 0.890

fever

1.720

0.701

6.013

0.014

5.584

1.412 - 22.077

headache

−2.413

1.038

5.407

0.020

0.090

0.012 - 0.684

Muscle ache

2.858

1.097

6.784

0.009

17.434

2.029 - 149.822

Ground glass shadow

2.131

0.613

12.081

0.001

8.427

2.533 - 28.030

Bronchial vascular bundle thickening

3.000

0.707

18.016

<0.001

20.082

5.026 - 80.240

Lesion infiltrates the outer lung

3.438

0.849

16.381

<0.001

31.122

5.889 - 164.475

Constant

−6.226

1.560

15.931

<0.001

0.002