Table 1

Characteristics of patients and tumors used for this study

Factor
Category
Number
Percentage

Tumor size (cm)
≤ 1
13
21.7

> 1, ≤ 4
23
38.3

> 4
11
18.3

Unknown
13
21.7
Tumor grade
I
14
23.3

II
23
38.3

III
16
26.7

Unknown
7
11.7
ER
Negative
19
31.7

Positive
37
61.7

Unknown
4
6.7
PR
Negative
36
60.0

Positive
21
35.0

Unknown
3
5.0
Her-2/neu
Negative
31
51.7

Positive
21
35.0

Unknown
8
13.3
P53
Negative
41
68.3

Positive
15
25.0

Unknown
4
6.7
Race
African American
15
25.0

Caucasian
44
73.3

Others
1
1.7
Age
Minimum
40


Maximum
79


Average
59


Median
58.5


Korourian et al. BMC Cancer 2008 8:136   doi:10.1186/1471-2407-8-136