Table 2.

Univariate and multivariate Cox regression analyses of overall survival in Cohort B of pancreatic cancer

Parameters	Univariate analysis, HR (95% CI)	P	Multivariate analysis, HR (95% CI)	P value
T stage
T3–T4 vs. T1–T2	1.23 (0.52–2.87)	0.64
N stage
N1 vs. N0	1.67 (0.90–3.07)	0.102	1.53 (0.89–2.52)	0.121
Tumor grade
G3 vs. G1 + G2	2.31 (1.27–4.20)	0.006	2.27 (1.20–4.30)	0.012
Tumor size, cm
≥ 4 vs. < 4	1.59 (1.02–2.49)	0.042	1.67 (0.94–2.96)	0.079
Vascular invasion
Yes vs. no	1.84 (1.02–3.31)	0.041	1.98 (0.88–4.45)	0.098
Neural invasion
Yes vs. no	1.69 (0.93–3.07)	0.102	2.79 (1.01–7.67)	0.047
GATA6-AS1 expression
High vs. low	0.49 (0.26–0.91)	0.024	0.57 (0.34–0.96)	0.036

Tumor classification and stage were referred to the 8th edition of UICC on cancer staging system

HR hazard ratio, CI confidence interval