From: Case-control study of mammographic density and breast cancer risk using processed digital mammograms
Quintile group | Frequency | Model 1a | Model 2b | Model 3c | ||||
---|---|---|---|---|---|---|---|---|
Case | Control | OR | 95 % CI | OR | 95 % CI | OR | 95 % CI | |
Area of density, overall (297 cases and 1149 controls) | ||||||||
Q1: 11.95 or less | 30 | 229 | 1.00 | Ref | 1.00 | Ref | 1.00 | Ref |
Q2: 11.96–19.09 | 45 | 230 | 1.44 | 0.86–2.42 | 1.45 | 0.86–2.43 | 1.43 | 0.85–2.40 |
Q3: 19.10–26.96 | 66 | 230 | 2.63 | 1.59–4.34 | 2.56 | 1.55–4.22 | 2.53 | 1.53–4.19 |
Q4: 26.97–37.78 | 68 | 230 | 2.86 | 1.74–4.69 | 2.88 | 1.75–4.75 | 2.85 | 1.73–4.69 |
Q5: 37.79+ | 88 | 230 | 3.53 | 2.18–5.71 | 3.45 | 2.12–5.60 | 3.48 | 2.14–5.65 |
Dense aread | 1.52 | 1.33–1.74 | 1.51 | 1.32–1.73 | 1.54 | 1.34–1.77 | ||
Area of density, women 50+ (288 cases and 1116 controls) | ||||||||
Q1: 11.80 or less | 29 | 223 | 1.00 | Ref | 1.00 | Ref | 1.00 | Ref |
Q2: 11.81-18.71 | 44 | 223 | 1.48 | 0.88–2.51 | 1.49 | 0.88–2.52 | 1.47 | 0.87–2.50 |
Q3: 18.72-26.66 | 65 | 223 | 2.73 | 1.64–4.54 | 2.68 | 1.61–4.46 | 2.66 | 1.59–4.43 |
Q4: 26.67-37.40 | 66 | 223 | 2.96 | 1.79–4.91 | 2.96 | 1.79–4.92 | 2.93 | 1.76–4.87 |
Q5: 37.41+ | 84 | 224 | 3.54 | 2.17–5.79 | 3.49 | 2.13–5.71 | 3.51 | 2.15–5.76 |
Dense aread | 1.52 | 1.32–1.74 | 1.51 | 1.32–1.73 | 1.53 | 1.33–1.76 |