Table 2. Select Clinical and Demographic Cancer Registry Characteristics of Breast Cancer Patients in the Final Pooled Dataset in the CBCSC, by Race/Ethnicity.

	Non-Latina White N=6,501 (53.2%)		African American N=2,060 (16.9%)		Latina N=2,032 (16.6%)		Asian American N=1,505 (12.3%)		Other race/ethnicity N=112 (0.9%)		Total N=12,210(100%)
	N	%a	N	%a	N	%a	N	%a	N	%a	N	%a
Stage (AJCC)b
I	3,416	54.1	827	42.4	911	46.5	729	49.7g	64	58.7	5,947	50.4
II	2,486	39.4	923	47.3	868	44.3	629	42.9	40	36.7	4,946	41.9
III	312	4.9	143	7.3	145	7.4	90	6.1	5	4.6	695	5.9
IV	102	1.6	58	3.0	34	1.7	19	1.3	0	0	213	1.8
Unknown	185		109		74		38		<5		409
Grade
I	1,522	26.1	280	15.6	306	16.9	215	15.6g	28	27.2	2,351	21.6
II	2,537	43.5	639	35.6	780	43.2	594	43.1	41	39.8	4,591	42.1
III/IV	1,769	30.4	874	48.8	721	39.9	569	41.3	34	33.0	3,967	36.4
Unknown	673		267		225		127		9		1,301
Nodal involvement
No	4,338	68.6	1,208	62.1	1,244	63.6	981	66.3	76	70.4	7,847	66.4
Yes	1,984	31.4	737	37.9	713	36.4	499	33.7	32	29.6	3,965	33.6
Unknown	179		115		75		25		<5		398
Tumor Size (cm)
<1	1,135	18.3	235	12.2	300	15.7	267	18.5 d,g	19	17.3	1,956	16.9
1-<5	4,730	76.2	1,512	78.6	1,495	78.1	1,084	75.1	85	77.3	8,906	76.8
≥5	346	5.6	176	9.2	120	6.3	92	6.4	6	5.4	740	6.4
Unknown	290		137		117		62		<5		608
ER/PR statusb
ER+/PR+	4,019	70.3	957	57.7	1,099	62.6	830	69.5	73	72.3	6,978	66.9
ER+/PR−	739	12.9	184	11.1	206	11.7	126	10.6	15	14.9	1,270	12.2
ER−/PR+	90	1.6	66	4.0	45	2.6	39	3.3	<5	1.0	241	2.3
ER-/PR-	868	15.2	453	27.3	406	23.1	199	16.7	12	11.9	1,938	18.6
Unknown	785		400		276		311		11		1,783
Chemotherapy
No	3,922	61.2	1,197	59.1d	1,074	53.8	795	54.3 g	62	55.4	7,050	58.7
Yes	2,490	38.8	828	40.9	923	46.2	670	45.7	50	44.6	4,961	41.3
Unknown	89		35		35		40		0		199
Radiation therapy
No	2,860	44.0	1,120	54.4	985	48.5	883	58.7	45	40.2	5,893	48.3
Yes	3,641	56.0	940	45.6	1,047	51.5	622	41.3	67	59.8	6,317	51.7
Hormone therapy
No	3,472	54.7	1,367	67.5	1,244	62.4	978	67.8	52	48.1	7,113	59.7
Yes	2,877	45.3	658	32.5	751	37.6	465	32.2	56	51.9	4,807	40.3
Unknown	152		35		37		62		<5		290
Surgery type
No surgery	115	1.8	98	4.8	36	1.8	18	1.2	0	0.0	267	2.2
Mastectomy	2,547	39.2	843	40.9	926	45.6	792	52.6	51	45.5	5,159	42.3
Lumpectomy	3,827	58.9	1,116	54.2	1,069	52.6	693	46.1	60	53.6	6,765	55.4
Other	12	0.2	<5	0.1	<5	0.0	<5	0.1	<5	0.9	19
Prior tumor
No	5,972	91.9	1,906	92.5d	1,924	94.7	1,445	96.0g	106	94.6	11,353	93.0
Yes	529	8.1	154	7.5	108	5.3	60	4.0	6	5.4	857	7.0
Subsequent tumor
No	5,438	83.6	1,695	82.3d	1,769	87.1	1,282	85.2d,g	98	87.5	10,282	84.2
Yes	1,063	16.4	365	17.7	263	12.9	223	14.8	14	12.5	1,928	15.8
Vital status
Deceased	1,512	23.3	786	38.2	457	22.5	270	17.9	22	19.6	3,047	25.0
Alive	4,989	76.7	1,274	61.8	1,575	77.5	1,235	82.1	90	80.4	9,163	75.0
Histology
Ductal	4,572	70.3	1,535	74.5e	1,513	74.5 f	1,118	74.3g	87	77.7	8,825	72.3
Lobular	1,393	21.4	280	13.6	314	15.4	218	14.5	20	17.9	2,225	18.2
Other	536	8.2	245	11.9	205	10.1	169	11.2	5	4.5	1,160	9.5
Marital status
Single	677	10.6	391	19.6	267	13.5	192	13.0	16	14.7	1,543	12.9
Married	4,113	64.4	821	41.2	1,197	60.4	1,069	72.2	70	64.2	7,270	60.8
Separated/divorced	758	11.9	423	21.2	254	12.8	77	5.2	10	9.2	1,522	12.7
Widowed	838	13.1	357	17.9	263	13.3	142	9.6	13	11.9	1,613	13.5
Unknown	115		68		51		25		<5		262
Neighborhood SESc
Lowest	201	3.2	559	27.6	263	13.3	137	9.3	<5	1.0	1,161	9.8
Low-middle	591	9.4	528	26.1	402	20.3	251	17.1	16	15.4	1,788	15.1
Middle	1,119	17.8	420	20.8	430	21.7	288	19.6	28	26.9	2,285	19.3
High-middle	1,717	27.3	338	16.7	447	22.6	376	25.5	31	29.8	2,909	24.5
Highest	2,657	42.3	177	8.8	440	22.2	420	28.5	28	26.9	3,722	31.4
Unknown	216		38		50		33		8		345

^aPercentages are calculated without the unknown category

^bAmerican Joint Committee on Cancer (AJCC). The California Cancer Registry (CCR) mandated the collection of estrogen receptor (ER)/progesterone receptor (PR) for diagnoses starting in 1990.

^cNeighborhood socioeconomic status (SES) level based on a principal component analysis and the US Census-assigned variables on education, income, occupation, and housing costs at the census block level [Ref 26, Yost et al.,2001]

^dP>0.05 for comparisons between non-Latina Whites and each of the other three groups (African Americans, Latinas, and Asian Americans); otherwise they are P<0.05

^eP>0.05 for comparisons between African Americans and Latinas; otherwise they are P<0.05

^fP>0.05 for comparisons between African Americans and Asian Americans; otherwise they are P<0.05

^gP>0.05 for comparisons between Latinas and Asian Americans; otherwise they are P<0.05