Tumor Factors

Overall

(n = 395)

Caucasian

(n = 307)

African

American

(n = 39)

Hispanic

(n = 10)

Asian-Pacific Islander

(n = 24)

Unknown/

Others

(n = 15)

p value*

Histopathology

0.419

DCIS

307 (77.7%)

242 (78.8%)

29 (74.4%)

7 (70.0%)

19 (79.2%)

10 (66.7%)

DCIS with IDC

70 (17.7%)

52 (16.9%)

6 (15.4%)

2 (20.0%)

5 (20.8%)

5 (33.3%)

DCIS with LCIS

18 (4.6%)

13 (4.2%)

4 (10.3%)

1 (10.0%)

0 (0.0%)

0 (0.0%)

Tumor characteristics

Median tumor size (cm)

1.0

1.0

0.2

0.1

0.1

0.1

0.861

Multicentricity

47 (11.9%)

34 (11.1%)

5 (12.8%)

2 (20.0%)

3 (12.5%)

3 (20.0%)

0.772

Multifocality

92 (23.3%)

72 (23.5%)

9 (23.1%)

3 (30.0%)

3 (12.5%)

5 (33.3%)

0.615

High Grade

140 (35.4%)

107 (34.9%)

16 (41.0%)

3 (30.0%)

10 (41.7%)

4 (26.7%)

0.931

Comedonecrosis

264 (66.8%)

199 (64.8%)

29 (74.4%)

7 (70.0%)

19 (79.2%)

10 (66.7%)

0.364

Receptor status

ER positive

235 (59.5%)

182 (81.3%)

21 (77.8%)

9 (90.0%)

12 (70.6%)

11 (84.6%)

0.737

PR positive

182 (46.1%)

139 (62.1%)

17 (63.0%)

7 (70.0%)

9 (52.9%)

10 (79.6%)

0.721

HER-2/neu positive

24 (6.1%)

21 (50.0%)

2 (50.0%)

0 (0.0%)

0 (0.0%)

1 (25.0%)

0.469

USC/Van Nuys prognostic index

<0.001

Low score

130 (32.9%)

103 (33.6%)

15 (38.5%)

0 (0.0%)

5 (20.8%)

7 (46.7%)

Intermediate score

264 (66.8%)

204 (66.4%)

24 (61.5%)

10 (100%)

19 (79.2%)

7 (46.7%)

High score

1 (0.3%)

0 (0.0%)

0 (0.0%)

0 (0.0%)

0 (0.0%)

1 (6.7%)