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. Author manuscript; available in PMC: 2013 Jul 10.
Published in final edited form as: Breast Cancer Res Treat. 2007 Oct 5;111(2):289–296. doi: 10.1007/s10549-007-9775-5

Table 6.

Comparison of lesion number in HBBD between different groups

Groups median range p
Ethnicity NS
 African American 2 2 – 9
 Caucasian 3 2 – 10
Age < 0.001
 ≤45 years 2a 2 – 10
 46–55 years 3b 2 – 9
>55 years 3 2 – 9
 Risk Level < 0.001
 Risk 1 1a 2 – 6
 Risk 2 3b 2 – 10
 Risk 3 4c 2 – 10
a

≤45 vs 46–55 or risk 1 vs risk 2, p < 0.05

b

46–55 vs >55 or risk 2 vs risk 3, p < 0.05

c

>55 vs ≤45 or risk 3 vs risk 1, p < 0.05