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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