Table I.

Demographics according to gender for White and Black gastric cancer patients (1973-2003).

Characteristic No.	White gastric cancer patients									Black gastric cancer patients
	Unadjusted					Adjusted				Unadjusted					Adjusted
	M	SD/%	F	SD/%	P‑value	M	SD/%	F	SD/%	M	SD/%	F	SD/%	P‑value	M	SD/%	F	SD/%
	28,775	63.86	16,281	36.14		9,975	50	9,975	50	4,469	61.40	2,810	38.60		1,188	50	1,188	50
Age, years
≥65	10,184	35.39	4,290	26.35	<0.01	3,028	30.36	3,028	30.36	1959	43.84	953	33.91	<0.01	437	36.78	437	36.78
<65	18,591	64.61	11,991	73.65		6,947	69.64	6,947	69.64	2,510	56.16	1,857	66.09		751	63.22	751	63.22
Tumor grade
1	1,910	6.64	1,037	6.37	<0.01	510	5.11	510	5.11	371	8.30	217	7.72	<0.01	49	4.12	49	4.12
2	8,151	28.33	3,901	23.96		2461	24.67	2461	24.67	1324	29.63	807	28.72		334	28.11	334	28.11
3	17,101	59.43	10,371	63.70		6,597	66.14	6,597	66.14	2,575	57.62	1,664	59.22		786	66.16	786	66.16
4	1,613	5.61	972	5.97		407	4.08	407	4.08	199	4.45	122	4.34		19	1.60	19	1.60
Primary site
Cardia	10,784	37.48	2,727	16.75	<0.01	2,240	22.46	2,240	22.46	532	11.90	227	8.08	<0.01	86	7.24	86	7.24
Fundus	1,257	4.37	799	4.91		445	4.46	445	4.46	188	4.21	118	4.20		31	2.61	31	2.61
Body	1,662	5.78	1,328	8.16		719	7.21	719	7.21	333	7.45	238	8.47		72	6.06	72	6.06
Gastric antrum	4,028	14.00	3,523	21.64		2,007	20.12	2,007	20.12	1,164	26.05	829	29.50		417	35.10	417	35.10
Pylorus	863	3.00	649	3.99		321	3.22	321	3.22	194	4.34	158	5.62		53	4.46	53	4.46
Lesser curvature	2,542	8.83	1,676	10.29		971	9.73	971	9.73	598	13.38	343	12.21		157	13.22	157	13.22
Greater curvature	1,148	3.99	860	5.28		442	4.43	442	4.43	230	5.15	125	4.45		34	2.86	34	2.86
Overlapping lesion	2,422	8.42	1,737	10.67		987	9.89	987	9.89	494	11.05	277	9.86		116	9.76	116	9.76
Stomach	4,069	14.14	2,982	18.32		1,843	18.48	1,843	18.48	736	16.47	495	17.62		222	18.69	222	18.69
Histology
Adenocarcinoma	20,438	71.03	10,229	62.83	<0.01	7,114	71.32	7,114	71.32	3,032	67.85	1,770	62.99	<0.01	929	78.20	929	78.20
Signet ring cell carcinoma	2,852	9.91	2,487	15.28		1,403	14.07	1,403	14.07	465	10.41	399	14.20		147	12.37	147	12.37
Mucinous carcinoma	1,218	4.23	628	3.86		214	2.15	214	2.15	203	4.54	109	3.88		13	1.09	13	1.09
Linitis plastica	523	1.82	536	3.29		220	2.21	220	2.21
Adenocarcinoma intestinal	1,022	3.55	535	3.29		217	2.18	217	2.18	215	4.81	117	4.16		26	2.19	26	2.19
Other	2,722	9.46	1,866	11.46		807	8.09	807	8.09	554	12.40	415	14.77		73	6.14	73	6.14
SEER historic stage
Distant	10,126	35.19	5,253	32.26	<0.01	3,455	34.64	3,455	34.64	1,677	37.53	889	31.64	<0.01	422	35.52	422	35.52
Localized	5,579	19.39	3,566	21.90		2,030	20.35	2,030	20.35	897	20.07	650	23.13		222	18.69	222	18.69
Regional	10,399	36.14	5,525	33.94		3,456	34.65	3,456	34.65	1,450	32.45	911	32.42		404	34.01	404	34.01
Unstaged	2,671	9.28	1,973	12.12		1,034	10.37	1,034	10.37	445	9.96	360	12.81		120	10.10	120	10.10
Sequence with surgery
No radiation	25,482	88.56	15,077	92.60	<0.01	9,273	92.96	9,273	92.96	4,088	91.47	2,577	91.71	0.94	1,121	94.36	1,121	94.36
Radiation after surgery	690	2.40	149	0.92		74	0.74	74	0.74	355	7.94	217	7.72		66	5.56	66	5.56
Radiation prior to surgery	2,603	9.05	1,055	6.48		628	6.30	628	6.30	26	0.58	16	0.57		1	0.08	1	0.08
Gastrectomy
No	12,089	42.01	6,781	41.65	0.46	4,192	42.03	4,192	42.03	1,915	42.85	1,179	41.96	0.45	508	42.76	508	42.76
Yes	16,686	57.99	9,500	58.35		5,783	57.97	5,783	57.97	2,554	57.15	1,631	58.04		680	57.24	680	57.24
Radiation
No	22,022	76.53	13,783	84.66	<0.01	8,532	85.53	8,532	85.53	3,701	82.81	2,381	84.73	0.03	1,074	90.40	1,074	90.40
Yes	6,753	23.47	2,498	15.34		1,443	14.47	1,443	14.47	766	17.14	429	15.27		114	9.60	114	9.60

M, male; F, female