Table 1.

Tumor characteristics of 58 breast cancer patients.

	AA	EA
Characteristics	N (29)	N (29)	P a
Age			0.57
<50	8	10
≥50	21	19
ER status			0.60
Positive	15	17
Negative	14	12
PR status			0.79
Positive	13	14
Negative	16	15
HER2			0.01
Positive	4	12
Negative	25	16
Grade			0.79
Moderate-differentiated	6	4
Poorly differentiated	23	25
Node status			1.00
Negative	10	10
Positive	19	19
Tumor stage			1.00
Stage I and II	18	18
Stage III and IV	11	11

^aChi-square or Fisher’s exact test, as appropriate.