This study aims to explore the relationship between the Lymphocyte-Albumin-Neutrophil Ratio (LANR) and short- and long-term mortality risks in elderly delirium patients, providing valuable insights for clinical management.<h4>Methods</h4>This study utilized the MIMIC-IV ICU public database to identify elderly delirium patients based on ICD-9 and ICD-10 codes. The gene discussed is ALB; the disease is delirium.