Drug names of diuretics and vasopressors.

(DOCX)</p

Participant flow diagram.

n is patient unit encounter. Abbreviations: RRT, renal replacement therapy; ESKD, end-stage kidney disease; CKD, chronic kidney disease; ICU, intensive care unit; AKI, acute kidney injury.</p

Kaplan–Meier survival curves for 30-day mortality by albumin and BMI in the eICU dataset.

The low-creatinine group had a higher 30-day mortality rate in four groups. (PNG)</p

Percentages of missing data.

(DOCX)</p

Kaplan–Meier survival curve for 30-day mortality according to creatinine category in the MIMIC dataset.

The low-creatinine (Cr P (PNG)</p

Kaplan–Meier survival curve for 30-day mortality according to creatinine category in fluid-overloaded patients in the MIMIC dataset.

The low-creatinine (Cr P (PNG)</p

Comparison of variables between the eICU and MIMIC datasets.

(DOCX)</p

Box plot of nonrenal SOFA score between fluid-overloaded patients with low creatinine (Cr < 4 mg/dL) and with high creatinine (Cr ≥ 4 mg/dL) in the MIMIC dataset.

The low-creatinine (Cr Kruskal–Wallis test, P (PNG)</p

Kaplan–Meier survival curves for 30-day mortality in patients with or without fluid overload in the eICU dataset.

A. The unadjusted 30-day mortality rate increased in the fluid-overloaded group. B. In patients with fluid overload, the low-creatinine (Cr < 4 mg/dL) group was associated with worse survival. C. In low-creatinine group, fluid-overloaded patients were associated with worse survival.</p

Additional file 1 of Predicting hyperkalemia in patients with advanced chronic kidney disease using the XGBoost model

Supplementary Materials: Table S1. ICD-9 and ICD-10 diagnostic codes used to identify comorbidities. Table S2. Medications used in this study. Table S3. Logistic regression analyses yielding odds ratios for factors associated with hyperkalemia in patients with advanced chronic kidney diseas