Figure 4.
Normalized protein catabolic rate (nPCR) was underestimated according to renal urea clearance (rCLurea) levels among 36,757 incident hemodialysis patients, leading to an overestimation of all-cause mortality risk associated with low nPCR. (A) Concordance and discordance of rCLurea-corrected nPCR (nPCRdial+renal) and non-rCLurea-corrected nPCR (nPCRdial) and (B) mortality risk associated with categories defined by the combination of nPCRdial and nPCRdial+renal among 36,757 incident hemodialysis patients in a case mix–adjusted model. Gray cells in A indicate groups in which hazard ratios were not reported due to the limited number of patients. *P<0.05.