Table 4.

Differences in survival in subgroup of pancreatic cancer patients median months and hazard ratio in patients without lymph nodes involvement (N0), with lymph nodes involvement different from para-aortic lymph nodes (N1) and with para-aortic lymph nodes involvement (N16+)

Group	N	Median survival (CI 95%) in months	Hazard ratio (CI 95%)	P
No lymph nodes involvement (N0)	25	71 (24–144)	1
Lymph nodes involvement different from para-aortic lymph nodes (N1)	48	38 (20–63)	1.80 (1.02–3.17)	<0.05
No lymph nodes involvement (N0)	25	71 (24–144)	1
Para-aortic lymph nodes involvement (N16+)	12	18 (6–18)	1.82 (1.08–3.05)	<0.05
Lymph nodes involvement different from para-aortic lymph nodes (N1)	48	38 (20–63)	1
Para-aortic lymph nodes involvement (N16+)	12	18 (6–18)	1.96 (0.79–4.80)	n.s.

CI, confidence interval.