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Table 3 Subset of subjects with sum of epithelium and stroma ≥ 10% in both dense and non-dense cores

From: Tissue-based associations of mammographic breast density with breast stem cell markers

Marker Expression measure

Dense

Non-dense

P for difference*

Number

Mean (STD)

Number

Mean (STD)

CD44

 Staining extent

34

7.4 (7.6)

34

3.3 (5.1)

0.009

 Expression score (extent x intensity)

34

11.8 (13.0)

34

5.4 (11.6)

0.01

CD24

 Staining extent

18

8.7 (6.5)

18

6.5 (6.8)

0.36

 Expression score (extent x intensity)

18

11.5 (9.3)

18

10.2 (13.7)

0.45

ALDH1A1

 Staining extent

6

0.5 (0)

6

0.3 (0.3)

0.17

 Expression score (extent x intensity)

6

0.8 (0.3)

6

0.3 (0.3)

0.09

  1. STD standard deviation, ALDH1A1 aldehyde dehydrogenase family 1 member A1
  2. *P value from signed rank test for alternative hypothesis of associations vs. null hypothesis of no association with significance level of 0.05