Table 1.

Demographic characteristics of patients with inflammatory breast cancer compared with locally-advanced and all other breast cancer patients, Patterns of Care Study, 2004–2012.

Characteristic	IBC		LABC (IIIB, C)		IBC versus LABC  P  value∗∗	Others		IBC versus others  P  value∗∗
	Number	%∗	Number	%∗		Number	%∗
Total	170		375			7079
Age at diagnosis, years
<50	50	26.4	113	32.2	0.02	2024	26.0	0.09
50–59	49	34.1	91	21.3		1818	25.9
60–69	36	22.6	76	18.8		1448	21.1
≥70	35	16.9	95	27.6		1789	27.0
Ancestry/ethnicity
European, non-Hispanic	81	68.4	174	66.4	0.54	4083	76.4	0.002
African, non-Hispanic	68	22.4	138	21.6		1925	13.7
Hispanic	14	7.6	38	8.2		615	6.2
Other	7	1.6	25	3.9		456	3.8
Body mass index (kg/m2)
<25	28	16.2	88	25.5	0.28	1743	27.0	0.05
25–29	35	24.4	77	22.1		1626	23.5
≥30	66	34.9	133	34.1		2086	27.6
Unknown	41	24.4	77	18.4		1624	21.9
Number of comorbidities
0	58	34.8	154	42.8	0.08	3162	45.3	0.03
1	57	34.3	105	27.5		2028	28.7
2	35	23.2	61	16.5		1127	15.2
≥3	20	7.7	55	13.2		762	10.8
Piccirillo Comorbidity Score
None	55	33.0	146	41.0	0.53	2948	42.1	0.01
Mild	68	40.6	147	37.5		2957	41.5
Moderate	29	17.0	49	14.1		709	10.0
Severe	16	7.9	27	6.0		287	3.8
Unknown	2	1.6	6	1.4		178	2.6
Method of detection
Screening mammography	8	3.8	72	19.9	<0.0001	3035	44.0	<0.0001
Clinical or self-breast exam	22	9.1	60	16.4		1055	13.7
Self-detection of lump	58	43.3	163	44.2		2119	29.9
Self-detection, no lump	74	37.1	62	14.6		399	5.2
Other, unknown	8	6.7	18	4.9		471	7.1
Patient health insurance
Private	77	48.4	167	52.3	0.58	4077	60.5	0.0004
Medicare only/public	38	21.3	88	24.5		1553	23.0
Medicaid	39	20.5	84	15.4		999	10.3
No insurance or unknown	16	9.9	36	7.8		450	6.2

^∗Percentages weighted based on sampling design. ^∗∗P values from chi-square tests.