GEE Model Results eGFR models Creatinine models Variable β P-value Model R2 β P-value Model R2 Furosemide exposure (100mg) -0.724 0.001 0.001 0.021 0.001 0.003 Baseline renal function -0.061 0.001 0.020 -0.020 0.001 0.003 Radio-contrast -1.046 0.073 0.020 0.032 0.003 0.004 Age -0.039 0.001 0.021 0.001 0.001 0.005 African American -0.175 0.511 0.014 0.003 Female -0.514 0.050 -0.005 0.312

Table 2: GEE Model Results.