Table 1.

Clinical and pathological characteristics of 405 primary breast tumors evaluated by microarray analysis

	Normal-weight (n = 131)	Overweight (n = 132)	Obese (n = 142)	P-value
Age				0.031
<40 years	0.15	0.11	0.06
40–49 years	0.27	0.20	0.22
≥50 years	0.58	0.69	0.72
Ethnicity				0.031
African American	0.17	0.19	0.32
Asian	0.04	0.02	0.01
Hispanic	0.02	0.02	0.01
Other	0.01	0.02	0.01
Non-Hispanic White	0.76	0.75	0.65
Tumor Size				0.130
T1	0.59	0.56	0.50
T2	0.35	0.34	0.45
T3	0.06	0.10	0.05
Tumor Grade				0.216
Well (Grade 1)	0.23	0.21	0.19
Moderate (Grade 2)	0.42	0.35	0.32
Poor (Grade 3)	0.35	0.44	0.49
Intrinsic Subtype				0.560
Luminal A	0.52	0.48	0.54
Luminal B	0.13	0.08	0.11
HER2-enriched	0.11	0.16	0.08
Basal-like	0.23	0.27	0.24
Normal-like	0.01	0.01	0.03
Lymph Node Status				0.447
Positive	0.36	0.40	0.44
Negative	0.64	0.60	0.56
TNM Stage				0.144
Stage I	0.45	0.40	0.31
Stage II	0.41	0.42	0.48
Stage III	0.12	0.12	0.18
Stage IV	0.02	0.06	0.03
Statusa				0.929
Died of disease	0.08	0.07	0.07
Died other causes	0.02	0.03	0.02
Alive with disease	0.05	0.05	0.03
Alive, disease-free	0.85	0.85	0.88

^aPatient status included died of disease if that patients died of metastatic breast cancer, and died other causes if a patient died from other health conditions. Patients Alive with disease were diagnosed with or have progressed to stage IV breast cancer while those Alive, disease-free have had no additional breast cancer-events since diagnosis and treatment of the original primary breast tumor