Table 1

Selected characteristics of the study populations

	Country	Authors	No. cases EBV-positive/EBV-negative	Year of diagnosis	Age in years, mean (range)	Men (%)	No. of deaths (%)	Follow-up time in years, median	Tumour characteristics (%)*
Continent	Country	Authors	No. cases EBV-positive/EBV-negative	Year of diagnosis	Age in years, mean (range)	Men (%)	No. of deaths (%)	Follow-up time in years, median	TNM stages III and IV	Non-cardia†	Intestinal-type‡	Poorly differentiated
Asia	China	Gao et al8	21/1018	1996–2004	58 (26–79)	81	745 (72)	1.7	84	35	54	47
		Zhao et al9	13/155	1999–2006	56 (26–85)	64	91 (54)	1.2	75	74	87	73
	Japan	Koriyama et al10	64/128	1976–1992	62 (32–81)	88	100 (52)	3.9	38	83	61	39
		Kijima et al11	24/321	1981–1999	64 (22–85)	70	146 (42)	2.2	33	53	60	40
		Nakao et al12	20/351	2001–2005	58 (27–79)	73	66 (18)	4.7	26	No data	33	67
	Korea	Park et al13	79/490	1995–2004	53 (23–81)	65	261 (46)	4.4	57	91	79	42
		Lee et al14; Chang et al21	63/1051	1995–1996	56 (18–84)	67	429 (39)	5.1	46	85	42	51
		Kim et al15	18/229	2002–2006	57 (24–81)	72	48 (19)	3.0	22	94	92	46
Europe	EPIC§	Gonzalez et al16	4/83	1994–2002	62 (34–77)	70	61 (70)	3.4	No data	67	50	No data
	Italy	Chiaravalli et al17	23/77	1980–2010	67 (42–90)	64	80 (80)	2.4	49	73	96	56
	Poland	Chow et al18	11/76	1994–1996	60 (30–80)	68	72 (83)	1.3	52	80	87	43
Americas	Chile	Corvalan et al19	27/118	1992–1997	60 (20–89)	67	106 (73)	3.0	33	61	55	42
Americas	Mexico	Herrera-Goepfert et al20	8/127	1983–2000	57 (26–85)	50	42 (31)	1.0	55	98	42	55
All	–	–	375/4224	1976–2010	58 (18–90)	71	2247 (49)	3.0	52	70	57	49

*Excluding unspecified cases.
†Including subsite localisation to fundus, corpus, antrum, pylorus, lesser and greater curvatures.
‡The intestinal-type included the Japanese classifications tubular, papillary and mucinous adenocarcinomas, and the diffuse-type included poorly differentiated adenocarcinoma, signet-ring cell carcinoma and LELC.59
§Includes cases from Denmark, Germany, Greece, Italy, Netherlands, Spain and UK.
EBV, Epstein–Barr virus; LELC, lymphoepithelioma-like carcinoma; TNM, tumour–node–metastasis.