Table 3.

Top 15 variables in each algorithm.

LASSO	Random Forest	Gradient Boost
Serum Creatinine **	Serum Creatinine **	Serum Creatinine **
CKD **	eGFR *	eGFR *
Diuretic use **	Mean arterial pressure *	Mean arterial pressure *
Serum albumin	CKD **	CKD **
Calcium channel blocker	Diuretic use **	Diuretic use **
Vasodilator therapy	Body Mass Index *	White Blood Cell *
Thrombocytopenia **	Hypercalcemia *	Prothrombin time (INR) *
NSAID use	Hemoglobin *	Serum sodium
Steroid use	Platelet count *	Platelet count *
Antidiabetic meds **	White Blood Cell *	Hemoglobin *
Respiratory failure *	Prothrombin time (INR) *	Antidiabetic meds **
Serum potassium	Thrombocytopenia **	Body Mass Index *
Nephrotoxic antibiotics *	Antidiabetic meds **	Thrombocytopenia **
Cancer	Hypertension	Hypercalcemia *
Anticoagulants	Congestive Heart Failure	Respiratory failure *

* Variable represented in 2 algorithms. ** Variable represented in all 3 algorithms. CKD: Chronic Kidney Disease, eGFR: Estimated Glomerular Filtration Rate, NSAID: Nonsteroidal Anti-inflammatory Drugs, INR: International Normalized Ratio