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

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

Mammographic features combined HRa (95% CI) HRb (95% CI)
1. cBIRADS 1, microcalcification category 0c, 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)
  1. cBIRADS Computer-generated Breast Imaging Reporting and Data System score
  2. aAdjusted for age, body mass index
  3. bAdjusted for age, body mass index, family history of breast cancer, menopausal status, and current use of hormone replacement therapy
  4. 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