Table 3 Breast cancer risk associated with Breast Imaging Reporting and Data System breast density cross-classified with dense breast volume
From: Combining quantitative and qualitative breast density measures to assess breast cancer risk
Dense breast volume,b ml | BI-RADS breast density aa | BI-RADS breast density ba | BI-RADS breast density ca | BI-RADS breast density da | Overall |
|---|---|---|---|---|---|
OR (95% CI)c | OR (95% CI)c | OR (95% CI)c | OR (95% CI)c | OR (95% CI)c | |
Quartile 1: ≤ 35.9 | 0.63 (0.45–0.89) | 0.94 (0.72–1.21) | 1.03 (0.71–1.49) | 1.53 (0.75–3.09) | 0.85 (0.71–1.03) |
Quartile 2: 36.0–50.0 | 0.60 (0.43–0.84) | 1.00 (reference) | 1.25 (0.92–1.69) | 1.50 (0.82–2.73) | 1.00 (reference) |
Quartile 3: 50.1–70.0 | 0.70 (0.49–0.99) | 0.98 (0.76–1.27) | 1.43 (1.09–1.89) | 2.87 (1.84–4.47) | 1.19 (1.00–1.42) |
Quartile 4: 70.1+ | 0.87 (0.54–1.41) | 1.15 (0.87–1.53) | 1.67 (1.31–2.12) | 2.56 (1.87–3.52) | 1.62 (1.36–1.92) |