Table 1 The demographic and perioperative variables of the 404 patients

Preoperative variables

Age (years)

Gender, male

Diseases, pancreatic cancer

Preoperative body mass index (kg/m²)

Preoperative biliary drainage, yes

Preoperative hemoglobin (g/dl)

Preoperative total protein (g/dl)

Preoperative albumin (g/dl)

Diabetes mellitus, yes

Hypertension, yes

Ischemic heart disease, yes

Liver cirrhosis, yes

Intraoperative and pathological variables

Operative time (min)

Estimated blood loss (ml)

Blood transfusion, present

Portal vein or superior mesenteric vein resection, yes

Associated visceral resection, yes

Paraaortic lymph node sampling, yes

Number of lymph node harvested

Lymph node metastasis, yes

Postoperative variables

White blood cell count on POD1 (/μl)

C-reactive protein on POD1 (mg/dl)

Drain output volume on POD1 (ml)

Drain amylase on POD1 (U/l)

White blood cell count on POD3 (/μl)

C-reactive protein on POD3 (mg/dl)

Drain output volume on POD3 (ml)

Drain amylase on POD3 (U/l)