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Table 1 Variables included in the different models of the AKIpredictor [19]

From: Machine learning versus physicians’ prediction of acute kidney injury in critically ill adults: a prospective evaluation of the AKIpredictor

Admission Blood glucose upon ICU admission
Suspected sepsis upon ICU admission (yes/no)
Hemodynamic support upon ICU admission (none/mechanical/pharmacological/both)
Day1 Serum creatinine
APACHE II score
Maximum lactate
Bilirubin
Hours of ICU stay
Day1+ Total amount of urine
Urine slope1
Time the mean arterial blood pressure is above its average value
Time the mean arterial blood pressure is below 60 mmHg
Pharmacologic hemodynamic support (cumulative dose of inotropes and vasopressors)
  1. The day1 model also uses the predictors of the admission model; the day1+ model also uses the predictors of the day1 and admission models
  2. Abbreviations: APACHE Acute Physiology and Chronic Health Evaluation, ICU intensive care unit
  3. 1The urine slope refers to the slope of a linear model fitted to the hourly urine values