Multivariate logistic regression analysis identified the following six factors as risk factors for 30-day mortality: performance status (PS) ≥ 2, albumin level < 3.0 g/dL, blood urea nitrogen (BUN) ≥ 25 mg/dL, C-reactive protein (CRP) ≥ 1.0 mg/dL, comorbid metastatic cancer, and cirrhosis (Table 2). Here, ALB is linked to metastatic malignant neoplasm.