Table 1 Age and pathology results for the two groups of patients

Age (mean ± standard deviation)

51.6 ± 12.7

55.6 ± 12.6

53.2 ± 13.1

Pathologic type

 Invasive ductal carcinoma

 Invasive lobular carcinoma

 Invasive mammary carcinoma with mixed ductal and lobular features

28 (88%)

2 (6%)

2 (6%)

17 (81%)

1 (5%)

3 (14%)

45 (85%)

3 (6%)

5 (9%)

Pathologic grade

 I/II

 III

9 (28%)

23 (72%)

11 (52%)

10 (48%)

20 (38%)

33 (62%)

Estrogen receptor status

 Positive

 Negative

16 (50%)

16 (50%)

17 (81%)

4 (19%)

33 (62%)

20 (38%)

Progesterone receptor status

 Positive

 Negative

12 (37%)

20 (63%)

15 (71%)

6 (29%)

27 (51%)

26 (49%)

HER2 status

 Positive

 Negative

11 (34%)

21 (66%)

2 (10%)

19 (90%)

13 (25%)

40 (75%)