Survival plots of the risk of death, rehospitalization, or emergency department
visit by stable, worsening, or improvement in renal function. WRF and IRF were
defined by >0.3 mg/dL change in serum creatinine (A) and a
≥20% change in eGFR (B). Patients who did not meet criteria for
WRF or IRF were classified as having Stable RF. IRF, improvement in renal
function; RF, renal function; WRF: worsening renal function.