Table 2.

Correlation matrix for prognostic factors in ampullary adenocarcinoma

		INT	PB	LNR	L	R
INT	CC		-0.81	-0.59	-0.18	-0.27
	p		.000	.000	.267	.100
PB	CC	-0.81		0.48	0.07	0.33
	p	.000		.002	.653	.041
LNR	CC	-0.59	0.48		0.52	0.21
	p	.000	.002		.001	.194
L	CC	-0.18	0.07	0.52		0.30
	p	.267	.653	.001		.067
R	CC	-0.27	0.33	0.21	0.30
	p	.100	.041	.194	.067

CC and p values derived from two-sided Spearman rank correlation

Abbreviations: CC correlation coefficient, INT intestinal subtype, PB pancreatobiliary subtype, LNR lymph node ratio, L lymphangiosis, R margin positive resection