The formula of the multivariable Cox proportional hazards model is shown below.h(t) = h0(t) × exp(β1 × Infection focus + 1.108 × SOFA score + 1.116 × age-adjusted CCI + 0.990 × Body temperature + 1.055 × Hemoglobin + 1.104 × Lactate + 0.845 × Albumin + 1.075 × IMA)β1 for Infection focus: 0.789 (gastrointestinal infection), 0.330 (biliary infection), 0.507 (genitourinary infection), and 0.721 (others)(1). Here, ALB is linked to infection.