. Author manuscript; available in PMC: 2011 Jun 29.

Published in final edited form as: Breast Cancer Res Treat. 2010 Feb 4;123(1):245–255. doi: 10.1007/s10549-010-0749-7

Table 4.

Mean baseline mammographic density in BRCA1/2 mutation carriers versus women at low-to-average risk of breast cancer

Variable	Low-to-average risk of breast cancer (n=119)		Unaffected BRCA1/2 carriers (n=143)		P-value
Variable	Mean (SE)	Range	Mean (SE)	Range	p1	p2	p3
Mammographic density (%)	33.4 (1.4)	(2.0–84.6)	37.3 (1.3)	(2.8–70.8)	0.04	0.65	0.43

P-values < 0.05 are in bold type

p1. P-value for two-sample t-test

p2. P-value for ANCOVA, adjusting for age (continuous)

p3. P-value for ANCOVA, adjusting for age (continuous) and BMI (continuous)