A clinical model for identifying the short-term risk of breast cancer

Breast Cancer Research

Table 4 Relative risk of developing breast cancer in relation to the combined effect of mammographic density, number of microcalcifications, and number of masses

Mammographic features combined	HR^a (95% CI)	HR^b (95% CI)
1. cBIRADS 1, microcalcification category 0^c, 0 masses, reference	1.0	1.0
2. cBIRADS 2, microcalcification category 1, 1 masses	4.2 (2.5–7.1)	4.3 (2.4–7.5)
3. cBIRADS 3, microcalcification category 2, 2 masses	7.9 (4.3–14.4)	7.9 (4.2–15.2)
4. cBIRADS 4, microcalcification category ≥3, ≥3 masses	8.0 (4.5–14.3)	8.7 (4.7–16.0)

cBIRADS Computer-generated Breast Imaging Reporting and Data System score
^aAdjusted for age, body mass index
^bAdjusted for age, body mass index, family history of breast cancer, menopausal status, and current use of hormone replacement therapy
^cCategory 0 means 0 microcalcifications, and 1 is 1–10 microcalcifications. The corresponding numbers for 2, 3, and 4 are 11–20, 21–40, and >40 microcalcifications, respectively

ISSN: 1465-542X