CRP and nutritional deficiency disease: Moreover, as NPAR is a composite parameter reflecting inflammation and malnutrition, it is of interest to assess the predictive value of NPAR compared to C-reactive protein (CRP) and ALB [11], and with other composite parameters associated with the mortality of PD patients, including neutrophil to lymphocyte ratio (NLR)[12], C-reactive protein to albumin ratio (CAR) and platelet to lymphocyte ratio (PLR) [13].