Table 4 Full significant logistic model with Nagelkerke R2 score of 0.745, according to the outcome (dead/alive) and its associated factors

Comorbidities

34

(91.9%)

191

(72.3%)

0.018

4.332

1.291

14.539

4.827

0.324

71.83

Renal Failure/Injury

18

(48.6%)

36

(13.6%)

 < 

0.001

6

2.879

12.504

12.452

1.301

119.165

Dementia

4

(10.8%)

8 (3%)

0.034

3.879

1.107

13.59

294.17

8

4.054

21,349.556

Cancer

7

(18.9%)

9 (3.4%)

 < 

0.001

6.611

2.296

19.038

589.90

9

17.691

19,670.832

Secondary Infection

10 (27%)

16 (6.1%)

 < 

0.001

5.741

2.371

13.9

0.097

0.007

1.289

Shock

24

(64.9%)

18 (6.8%)

 < 

0.001

25.23

1

11.031

57.712

1802.7

99

16.195

200,680.618

Co-Infection

7

(18.9%)

16 (6.1%)

0.009

3.617

1.377

9.499

15.925

0.845

300.105

ARDS

35

(94.6%)

180

(68.2%)

0.004

8.167

1.919

34.756

0.174

0.002

13.756

Mild

(n = 236)

2 (5.4%)

70

(26.5%)

0.003

9.154

2.14

39.24

0.158

0

28,166,402.95

Severe

(n = 237)

25

(67.6%)

67

(25.4%)

 < 

0.001

4.545

2.11

9.792

1645.5

34

0.091

29,789,951.29

Mechanical

Ventilation

20

(54.1%)

37 (14%)

 < 

0.001

8.144

3.83

17.316

0.178

0.003

10.675

High-FlowNasal

Canula

32

(86.5%)

104

(39.4%)

0.03

0.083

0.0284

0.241

0.069

0.0038

0.63

ICU admission

22

(59.5%)

83

(31.4%)

0.001

3.389

1.651

6.954

1.213

0.099

14.824

Initial PaFi

 < 200

28

(75.7%)

95 (36%)

 < 

0.001

5.535

2.507

12.219

0.472

0.053

4.228

 > 200

9

(24.3%)

169 (64%)

 < 300

34

(91.9%)

190 (72%)

0.016

4.414

1.315

14.812

2.57

0.094

70.038

 > 300

3 (8.1%)

74 (28%)

Lowest PaFi

  < 200

35

(94.6%)

140 (53%)

 < 0.001

15.5

3.653

65.769

1.399

0

1,870,118,737

  > 200

2 (5.4%)

124 (47%)