Table 1.

Clinico-pathological patient characteristics of the gastric cancer validation cohort

Patient characteristics
Patients		[n]	482
Age [years]		[mean ± SD]	67.9 ± 11.1
		median	68
Gender	Men	[n (%)]	297	(61.6)
	Women	[n (%)]	185	(38.4)
Follow-up data	Alive	[n (%)]	131	(28.1)
	Dead	[n (%)]	335	(71.9)
Localization	Proximal	[n (%)]	149	(30.9)
	Distal	[n (%)]	333	(69.1)
pT-category	pT1a	[n (%)]	13	(2.7)
	pT1b	[n (%)]	49	(10.2)
	pT2	[n (%)]	56	(11.6)
	pT3	[n (%)]	190	(39.4)
	pT4a	[n (%)]	134	(27.8)
	pT4b	[n (%)]	40	(8.3)
pN-category	pN0	[n (%)]	138	(28.8)
	pN1	[n (%)]	67	(14.0)
	pN2	[n (%)]	85	(17.7)
	pN3/a/b	[n (%)]	189	(39.5)
UICC Stage (7th ed.)	IA	[n (%)]	49	(10.4)
	IB	[n (%)]	32	(6.8)
	IIA	[n (%)]	58	(12.3)
	IIB	[n (%)]	47	(9.9)
	IIIA	[n (%)]	55	(11.6)
	IIIB	[n (%)]	83	(17.5)
	IIIC	[n (%)]	66	(14.0)
	IV	[n (%)]	83	(17.5)
Stage according to	I	[n (%)]	49	(10.2)
Kiel proposal	II	[n (%)]	84	(17.5)
	IIIA	[n (%)]	49	(10.2)
	IIIB	[n (%)]	153	(31.9)
	IV	[n (%)]	145	(30.2)
Resected lymph nodes		[mean ± SD]	19.2 ± 8.2
		median [n]	18
Positive lymph nodes		[mean ± SD]	6.4 ± 7.4
		median [n]	3
Lymph node ratio (LNR)		median [n]	0.2
Tumor grade	G1 / G2	[n (%)]	111	(23.7)
	G3 / G4	[n (%)]	357	(76.3)
Resection margin (R-status)	R0	[n (%)]	403	(88.2)
	R1/R2	[n (%)]	54	(11.8)