Recurrence and survival after surgery for pancreatic cancer with or without acute pancreatitis

Table 2 Predictive factors of postoperative early recurrence (within 12 mo)

Parameters	P value	Univariate OR (95%CI)	Multivariate OR (95%CI)	P value
Acute pancreatitis, (yes vs no)	0.012	3.57 (1.32-9.66)	4.13 (1.41-12.10)	0.010
Adjuvant chemotherapy, (yes vs no)	0.027	0.46 (0.24-0.92)	0.42 (0.20-0.90)	0.025
Positive lymph nodes, (yes vs no)	0.001	2.74 (1.49-5.04)	3.02 (1.54-5.90)	0.001
Surgical margin, (R1 vs R0)	0.015	5.09 (1.37-18.91)	4.78 (1.16-19.74)	0.030
Vascular invasion, (yes vs no)	0.093	2.32 (0.87-6.18)		0.463
Tumor site, (distal vs head)	0.036	1.96 (1.05-3.65)	2.70 (1.33-5.47)	0.006
TNM (II/III vs I)	0.038	3.37 (1.07-10.57)		0.188

Patient characteristics and pathologic feature, including age, sex, differentiation, and prineural invasion were analyzed as well, and the differences did not reach statistical significance in these factors (data not shown). TNM: Tumor node metastasis; OR: Odd ratio; CI: Confidence interval.