Table 1.

Demographic and behavioral characteristics of cancer cases and controls, by study location.

	All studies pooled				Los Angeles						Taixing								MSKCC
	Case* N = 2,049		Control N = 1,666		Lung N = 611		UADT N = 553		Control N = 1,040		Esophagus N = 218		Stomach N = 206		Liver N = 204		Control N = 415		Bladder N = 227		Control N = 211
	N	%	N	%	N	%	N	%	N	%	N	%	N	%	N	%	N	%	N	%	N	%
Age
35<	49	2.4	133	8.0	4	0.7	25	4.5	51	4.9	1	0.5	1	0.5	16	7.8	19	4.6	2	0.9	63	30.0
35–44	185	9.0	278	16.7	57	9.3	65	11.8	171	16.4	5	2.3	12	5.8	37	18.1	41	9.9	6	2.6	66	31.3
45–54	760	37.1	641	38.5	301	49.3	249	45.0	499	48.0	66	30.3	38	18.5	63	30.9	98	23.6	35	15.4	44	20.9
55+	1,054	51.4	614	36.9	249	40.8	214	38.7	319	30.7	145	66.5	155	75.2	88	43.1	257	61.9	184	81.1	38	18.0
Missing	1	0.1	0	0	0	0	0	0	0	0	1	0.5	0	0	0	0	0	0	0	0	0	0
Gender
Male	1,371	66.9	1,062	63.7	303	49.6	420	76.0	623	59.9	141	64.7	138	67.0	159	77.9	287	69.2	189	83.3	152	72.0
Female	678	33.1	591	35.5	308	50.4	133	24.1	417	40.1	77	35.3	68	33.0	45	22.1	128	30.8	38	16.7	46	21.8
Missing	0	0	13	0.8	0	0	0	0	0	0	0	0.0	0	0	0	0	0	0	0	0	13	6.2
Ethnicity
White	920	44.9	825	49.5	359	58.8	331	59.9	634	61.0									206	90.8	191	90.5
Hispanic	176	8.6	206	12.4	70	11.5	100	18.1	204	19.6									6	2.6	2	1.0
African-American	174	8.5	104	6.2	96	15.7	66	11.9	102	9.8									7	3.8	2	1.0
Asian-American	113	5.5	64	3.8	70	11.5	41	7.4	62	6.0									1	0.4	1	0.5
Other	30	1.5	38	2.3	15	2.5	13	2.4	37	3.6									2	0.9	1	0.5
Han Chinese	628	30.7	415	24.9							218	100	206	100	204	100	415	100
Missing	8	0.4	15	0.9	1	0.2	2	0.4	1	0.1	0	0	0	0	0	0	0	0	5	2.2	14	6.6
Education (year)
< 12	851	41.5	459	27.6	107	17.5	438	79.2	116	11.2	212	97.2	203	98.5	191	93.6	339	81.7	19	8.4	3	1.4
12 or more	1,195	58.3	1,207	72.4	504	82.5	115	20.8	923	88.8	3	1.4	3	1.5	13	6.4	76	18.3	208	91.6	208	98.6
Missing	3	0.1	0	0	0	0	0	0	1	0.1	3	1.4	0	0	0	0	0	0	0	0	0	0
Tobacco (pack-years)
Never smoker	588	28.7	816	49.0	110	18.0	159	28.8	492	47.3	94	43.1	92	44.7	85	41.7	217	52.3	38	16.7	107	50.7
>0–20	416	20.3	493	29.6	102	16.7	132	23.9	353	33.9	45	20.6	48	23.3	58	28.4	91	21.9	29	12.8	49	23.2
>20–40	507	24.7	236	14.2	202	33.1	139	25.1	136	13.1	48	22.0	41	19.9	38	18.6	83	20.0	31	13.7	17	8.1
>40	487	23.8	94	5.6	197	32.2	123	22.2	58	5.6	24	11.0	20	9.7	11	5.4	23	5.5	107	47.1	13	6.2
Missing	51	2.5	27	1.6	0	0	0	0	1	0.1	7	3.2	5	2.4	12	5.9	1	0.2	22	9.7	25	11.9
Alcohol
Never	618	30.2	507	30.4	170	27.8	94	17.0	264	25.4	116	53.2	111	53.9	87	42.7	207	49.9	31	13.7	36	17.1
Ever	1,395	68.1	1,138	68.3	440	72.0	457	82.6	772	74.2	95	43.6	90	43.7	105	51.5	205	49.4	187	82.4	161	76.3
Missing	36	1.8	21	1.3	1	0.2	2	0.4	4	0.4	7	3.2	5	2.4	12	5.9	3	0.7	9	4.0	14	6.6
H. pylori infection													71	34.5			114	27.5
Chronic hepatitis B															132	64.7	102	24.6

MSKCC: Memorial Sloan-Kettering Cancer Center; UADT: upper aero-digestive tract.

^*Also includes 30 kidney cancer cases from MSKCC.