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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