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Table 3 Variable selection of stepwise logistic regression model

From: Development and validation of a novel blending machine learning model for hospital mortality prediction in ICU patients with Sepsis

Variables OR [95% CI] P-value
Demographic characteristics
 BMI 0.986 [0.979, 0.993] < 0.001
 Age (with each 10 years increment) 1.269 [1.219, 1.322] < 0.001
Admission type (unscheduled surgery as reference)
 Internal medicine 1.526 [1.185, 1.964] 0.001
 Scheduled surgery 0.936 [0.504, 1.738] 0.834
Comorbidities
 AIDS 2.281 [1.343, 3.873] 0.002
 Hematological tumor 2.279 [1.661, 3.126] < 0.001
 Metastatic cancer 2.593 [1.858, 3.618] < 0.001
Vital signs
 Minimum HR (with every 10 beats/min increment) 1.110 [1.073, 1.147] < 0.001
 Maximum RR 1.016 [1.009, 1.022] < 0.001
 Minimum RR 1.022 [1.012, 1.033] < 0.001
 Minimum temperature 0.811 [0.766, 0.858] < 0.001
 Minimum SBP (with every 10 mmHg increment) 0.922 [0.880, 0.966] 0.001
 Minimum MAP (with every 10 mmHg increment) 0.927 [0.872,0.986] 0.016
 Minimum SpO2 0.981 [0.976, 0.986] < 0.001
Laboratory tests
 Minimum PaO2 (with every 10 mmHg increment) 1.020 [1.005, 1.035] 0.010
 Maximum PaCO2 (with every 10 mmHg increment) 1.075 [1.041, 1.109] < 0.001
 Minimum PaO2/FiO2 (with every 20 mmHg increment) 0.940 [0.926, 0.955] < 0.001
 Maximum WBC 0.989 [0.979, 0.998] 0.023
 Minimum WBC 1.021 [1.009, 1.034] 0.001
 Minimum platelet (with every 20*1012/L increment) 0.981 [0.971, 0.992] 0.001
 Maximum hemoglobin 0.942 [0.918, 0.966] < 0.001
 Minimum bilirubin 1.073 [1.048, 1.098] < 0.001
 Maximum albumin 0.679 [0.578, 0.799] < 0.001
 Minimum albumin 0.848 [0.720, 0.999] 0.049
 Maximum creatinine (with every 0.1 mg/dl increment) 0.991 [0.987, 0.996] < 0.001
 Minimum BUN 1.009 [1.006, 1.012] < 0.001
 Minimum sodium (with every 10 mmol/L increment) 0.900 [0.830, 0.975] 0.010
 Minimum potassium 1.110 [1.018, 1.211] 0.019
 Maximum lactate 1.072 [1.043, 1.102] < 0.001
 Minimum lactate 1.120 [1.067, 1.176] < 0.001
 Maximum PT 1.013 [1.006, 1.020] < 0.001
Minimum GCS 0.943 [0.927, 0.960] < 0.001
Mechanical ventilation 1.687 [1.506, 1.891] < 0.001
Renal replacement therapy 1.730 [1.274, 2.349] 0.037
24 h urine output (with every 200 ml increment) 0.973 [0.963, 0.983] < 0.001
  1. Abbreviations: OR odds ratio, CI confidence interval, BMI body mass index, HR heart rate, RR respiratory rate, SBP systolic blood pressure, MAP mean arterial pressure, GCS Glasgow Coma Scale, WBC white blood cell count, PT prothrombin time