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Table 4 Direct logistic regression model with clinical variables affecting mortality of patients used to develop the score

From: Physiological parameters for Prognosis in Abdominal Sepsis (PIPAS) Study: a WSES observational study

Variable

Estimate

SE

Wald test

P

OR

95% CI

LL

UL

Age > 80 years

0.97

0.19

25.91

< 0.0001

2.63

1.81

3.89

Malignancy

1.13

0.17

42.43

< 0.0001

3.11

2.21

4.37

Severe CVD

0.88

0.17

26.09

< 0.0001

2.41

1.72

3.38

Severe CKD

1.2

0.23

26.23

< 0.0001

3.32

2.1

5.26

RR ≥ 22 breaths/min

0.75

0.16

22.61

< 0.0001

2.11

1.55

2.87

SBP < 100 mmHg

0.86

0.17

27.29

< 0.0001

2.37

1.71

3.27

AVPU responsiveness scale: not completely alert.

1.35

0.2

47.98

< 0.0001

3.86

2.63

5.65

Blood oxygen saturation level: SpO2 < 90% in air

0.87

0.25

12.15

< 0.0001

2.39

1.46

3.89

Constant

− 3.79

0.13

834.77

< 0.0001

0.023

  1. SE: standard error, OR: odds ratio, CI: confidence interval, LL: lower limit, UL: upper limit, CVD: cardiovascular disease, CKD: chronic kidney disease, RR: respiratory rate, SBP: systolic blood pressure, AVPU: alert/verbal/painful/unresponsive