Table 3 Effect of suspected variables on different grades of ammographic breast density (as a categorical variable)
Mammographic breast density | Grade1 | Grade2 | Grade3 | Grade4 | P value |
|---|---|---|---|---|---|
Age (Mean ± SD) | 45.85 ± 5.76 | 48.44 ± 6.71 | 50.33 ± 7.69 | 50.25 ± 3.86 | 0.0001a |
BMI (Mean ± SD) | 27.83 ± 4.32 | 27.97 ± 4.45 | 27.51 ± 3.32 | 34.17 ± 6.73 | 0.038a |
OCP (N, %) | |||||
Yes | 117 (54.4) | 85 (39.5) | 11 (5.1) | 2 (0.9) | 0.39b |
No | 73 (47.1) | 67 (43.2) | 13 (8.4) | 2 (1.3) | |
Progesterone (N, %) | |||||
Yes | 64 (50.4) | 52 (40.9) | 10 (7.9) | 1 (0.8) | 0.88b |
No | 126 (51.9) | 100 (41.2) | 14 (5.8) | 3 (1.2) | |
Family history of breast cancer (2nd and 3rd degree) (N, %) | |||||
Yes | 22 (44.9) | 21 (42.9) | 5 (10.2) | 1 (2%) | 0.35b |
No | 168 (52.3) | 131(40.8) | 19 (5.9) | 3 (0.9) | |
Endometriosis (N, %) | |||||
Yes | 113 (62.8) | 56 (31.1) | 11 (6.1) | 0 | 0.0001b |
No | 77 (40.5) | 96 (50.5) | 13 (6.8) | 4 (2.1) |