Table 4 Univariate and multivariate analysis of prognostic factors for 30-day mortality

Age

1.04

1.02–1.06

<0.001

1.04

1.02–1.07

<0.001

COPD

2.03

1.38–2.97

<0.001

1.77

1.13–2.76

0.01

Malignancy

1.94

1.16–3.26

0.01

2.25

1.25–4.06

0.007

Body temperature (°C)

0.65

0.55–0.77

<0.001

0.81

0.67–0.99

0.045

Heart rate (beats/min)

1.01

1.00–1.02

0.004

Respiratory rate (breaths/min)

1.08

1.06–1.11

<0.001

1.04

1.01–1.07

0.008

PaO₂/FiO₂ ≤ 250 (mmHg)

6.39

4.18–9.76

<0.001

3.15

1.93–5.14

<0.001

Alb (g/dL)

0.22

0.16–0.30

<0.001

0.27

0.19–0.39

<0.001

BUN (mg/dL)

1.03

1.02–1.04

<0.001

1.01

1.00–1.02

0.04

Cr (mg/dL)

1.27

1.10–1.47

0.001

Ht (%)

0.95

0.92–0.99

0.004

CRP (mg/L)

1.04

1.02–1.06

<0.001

Multilobar pneumonia

3.53

2.22–5.60

<0.001

Bacteremia

4.39

2.58–7.49

<0.001

AZM combination

0.42

0.23–0.77

0.005

0.50

0.26–0.97

0.04

FQN combination

6.55

4.10–10.5

<0.001

Mechanical ventilation

7.93

5.16–12.2

<0.001

2.99

1.75–5.12

<0.001

Vasopressor drug usage

7.44

4.49–12.3

<0.001