Table 1.

Racial/ethnic differences in patient, facility and tumor characteristics among breast cancer patients with a recent screen prior to their diagnosis in the Breast Cancer Care in Chicago study (2005–2008).

	N	nH White (N=314) %	nH Black (N=304) %	Hispanic (N=132) %	P-Value
SADRSa					0.0004
No	507	75	64	58
Yes	243	25	36	42
Stage at diagnosis					<0.0001
Stage 0,1	423	75	60	54
Stage 2,3,4	227	25	40	46
Age					0.2848
25–49	169	24	20	26
50–59	246	32	33	34
60–79	335	44	47	40
Breast Density					0.9437
Fatty	33	7	6	9
Scattered fibroglandular	208	45	46	36
Heterogeneously dense	171	34	36	42
Extremely dense	63	14	13	13
Socioeconomic factors
Health insurancea					<0.0001
None	71	2	13	20
Public	117	5	23	23
Private	562	93	64	57
Education					<0.0001
<12	135	4	21	44
12	133	13	21	20
>12	479	82	57	36
Income					<0.0001
<20K	181	10	35	35
20–50K	343	41	51	52
>50K	203	49	13	13
Disadvantage					<0.0001
>1 SD below mean	113	32	1	8
Within 1 SD of the mean	493	67	56	85
>1 SD above mean	142	1	43	8
Affluence					<0.0001
>1 SD below mean	49	0	11	11
Within 1 SD of the mean	542	59	82	84
>1 SD above mean	157	41	7	5
Facility characteristics
Designation					<0.0001
Not Disproportionate Share	547	92	66	54
Disproportionate Share	187	8	34	46
Designation					0.0220
Not a Breast Center of
Excellence	480	59	69	69
Breast Center of Excellence	257	41	31	31
University-Based					<0.0001
No	545	59	78	92
Yes	205	41	22	8
Reliance on dedicated radiologists					0.0180
None	137	14	19	27
Partial	475	66	65	54
Sole reliance	138	20	16	20
Tumor aggressiveness factors
ER/PR status					<0.0001
Either or both positive	461	91	75	82
Double negative	96	9	25	18
Histologic Grade (1,2,3)					0.0085
Low	129	30	19	12
Moderate	237	36	43	48
High	209	33	38	40

^aP-values for these 2 variables and for all binary variables are from a general Chi-Squared test, whereas p-values for the remaining ordered variables are from a test for trend via nominal logistic regression with race/ethnicity as a dependent variable. P-values >0.15 are suppressed.