ALB and malnutrition: Significant differences were observed between the CI and non-CI groups in baseline characteristics and PEW-related indicators, including age, educational level, Kt/V, PEW detection rate, and key PEW indicators (albumin [ALB], lean body mass, arm muscle circumference [AMC], normalized daily protein intake [nDPI], Scored Patient-Generated Subjective Global Assessment [PG-SGA] score, and Malnutrition-Inflammation Score [MIS] score) (p < 0.05) (Table 1).