Table 2 Univariate analysis for identifying risk factor of PF
|  | Non-PF (n = 70) | PF (n = 10) | p-value |
|---|---|---|---|
Pre-operative variables | Â | Â | Â |
 Age (years) | 69.0 (43–88) | 71.0 (26–79) | 0.961 |
 Gender (male/female) | 38/32 | 8/2 | 0.114 |
 Body weight (kg) | 50.6 (33.0–83.5) | 63.9 (44.3–96.0) | 0.075 |
 Diagnosis PDAC/non PDAC | 30/40 | 0/10 | *0.009 |
 Hemoglobin (g/dl) | 12.8 (8.9–15.6) | 12.1 (9.1–15.9) | 0.708 |
 White blood cell counts (/mm2) | 5100 (3300–11,300) | 4950 (2100–8000) | 0.782 |
 Neutrophil (/mm2) | 3245 (2046–8512) | 2718 (1365–4880) | 0.106 |
 Lymphocyte (/mm2) | 1428 (630–2438) | 1760 (400–2940) | 0.135 |
 Total protein (mg/dl) | 6.9 (4.7–8.3) | 6.6 (6.7–7.8) | 0.923 |
 Albumin (mg/dl) | 4.0 (2.5–4.7) | 4.0 (2.7–5.0) | 0.857 |
 Serum amylase (U/l) | 90 (12–604) | 94.5 (45–218) | 0.903 |
 Total cholesterol | 179 (120 -282) | 195 (120–282) | 0.295 |
 Breath test (%dose/h) | 33.4 (16.3–69.6) | 40.2 (29.1–51.4) | *0.005 |
Intra-operative variables | Â | Â | Â |
 Operation time (min) | 466.5 (296–842) | 489.0 (338–607) | 0.813 |
 Blood loss (g) | 325.5 (23–4900) | 321.0 (205–1545) | 0.745 |
 Diameter of main pancreatic duct | 3.2 (1.3–12.3) | 2.3 (1.8–5.7) | 0.125 |
 Pancreatic texture (soft/hard) | 37/33 | 9/1 | *0.038 |