Density at diagnosis | CBC-patients vs. unilateral breast cancer patients | Unilateral breast cancer patients vs. healthy women | ||||
---|---|---|---|---|---|---|
Percent density | N | OR | 95% CI | N | OR | 95% CI |
≤5% | 24 | 1.28 | 0.52 to 3.13 | 19 | 0.58 | 0.20 to 1.69 |
>5 to 25% | 174 | 1.00 | Ref. | 125 | 1.00 | Ref. |
>25 to 50% | 184 | 1.14 | 0.71 to 1.82 | 111 | 2.27 | 1.18 to 4.37 |
>50% | 40 | 0.46 | 0.17 to 1.21 | 32 | 2.89 | 1.01 to 8.21 |
P -value for trend* | 0.40 | <0.01 | ||||
Area density | N | OR | 95% CI | N | OR | 95% CI |
≤20 cm 2 | 106 | 1.35 | 0.79 to 2.32 | 85 | 0.65 | 0.36 to 1.17 |
>20 to 40 cm 2 | 144 | 1.00 | Ref. | 101 | 1.00 | Ref. |
>40 to 60 cm 2 | 96 | 1.25 | 0.71 to 2.19 | 52 | 1.40 | 0.69 to 2.83 |
>60 cm 2 | 76 | 1.27 | 0.70 to 2.29 | 49 | 1.58 | 0.76 to 3.26 |
P -value for trend* | 0.96 | 0.02 |