Table 6.

Multivariate analysis for overall survival in pancreatic ductal adenocarcinoma patients who underwent R0 resection

Characteristics	HR (95%CI)	Wald	P value
Age in yr	1.289 (0.971-1.710)	3.076	0.079
> 60
≤ 60
Degree of differentiation		31.261	< 0.001
Poorly/well	5.209 (2.837-9.562)	28.353	< 0.001
Moderately/well	1.912 (1.184-3.085)	7.037	0.008
Capsular invasion	0.697 (0.475-1.022)	3.409	0.065
Absent
Present
Maximum tumor diameter in cm	1.296 (0.959-1.751)	2.843	0.092
> 4
≤ 4
Number of metastatic lymph nodes	0.678 (0.509-0.904)	7,027	0.008
Absent
Present
Adjuvant therapy	1.604 (1.214-2.118)	11.058	0.001
Absent
Present
Preoperative CA19-9 level in U/mL	1.740 (1.288-2.352)	13.003	< 0.001
> 336.4
≤ 336.4
Preoperative FAR	2.258 (1.720-2.963)	34.468	< 0.001
> 0.08
≤ 0.08

CI: Confidence interval; FAR: Fibrinogen-to-albumin ratio; HR: Hazard ratio.