Table 1.

Clinical characteristics of patients who underwent surgery for pancreatic head cancer, stratified by cohort

Characteristic	Cohort A [n = 186]	Cohort B [n = 134]	p value
Age at surgery, years [median (IQR)]	68 (61–74)	66 (60–72)	0.099
Sex, males	96 (51.6)	75 (56.0)	0.441
ASA fitness grade			0.027
Class I	22 (11.8)	31 (23.1)
Class II	126 (67.7)	80 (59.7)
Class III	38 (20.4)	23 (17.2)
PALN+	34 (18.3)	25 (18.7)	0.932

Bold value indicates statistical significance

Data are expressed as n (%) unless otherwise specified

For comparison between two groups Mann–Whitney U test were used for continuous variables and for binary variables Chi squared test or Fisher’s exact test were used as appropriate

ASA American Society of Anesthesiologists, PALN + positive para-aortic lymph nodes, IQR interquartile range