Table 5.

Absolute 5-Year Risk of Breast Cancer by Age and Density

	5- Year Risk for Breast Cancer by Density (%)
Age	Almost Entirely Fatty	Scattered Fibroglandular Densities	Heterogeneously Dense	Extremely Dense
40–44 years	0.2	0.5	0.7	1.0
45–49 years	0.4	0.8	1.2	1.6
50–54 years	0.5	1.0	1.6	2.1
55–59 years	0.7	1.4	2.2	3.0
60–64 years	0.8	1.7	2.6	3.4
65–69 years	1.3	2.0	2.9	3.0
70–74 years	1.4	2.1	3.1	3.3

Adapted from Tice JA, Cummings SR, Smith-Bindman R, et al. Using clinical factors and mammographic breast density to estimate breast cancer risk: development and validation of a new predictive model. Ann Intern Med 2008; 148(5):337–47; with permission. Table 5