CBC Number (%) | UBC Number (%) | ORc (95% CI) | |
---|---|---|---|
Percent mammographic density prior to/at diagnosis | |||
Age <45 years | |||
<25% | 18 (20) | 30 (30) | 0.46 (0.20, 1.05) |
25 to <50% | 46 (51) | 49 (49) | 1.00 |
≥50% | 26 (29) | 21 (21) | 2.22 (0.94, 5.25) |
Age 45 to <50 years | |||
<25% | 19 (23) | 25 (27) | 0.86 (0.36, 2.06) |
25 to <50% | 39 (48) | 46 (49) | 1.00 |
≥50% | 24 (29) | 22 (24) | 1.22 (0.51, 2.89) |
Age 50–54 years | |||
<25% | 30 (37) | 26 ((34) | 0.87 (0.37, 2.04 |
25 to <50% | 40 (49) | 35 (46) | 1.00 |
≥50% | 11 (14) | 15 (20) | 0.60 (0.21, 1.68) |
p interaction | 0.39 | ||
Post diagnosis | |||
Age <45 years | |||
<25% | 42 (34) | 71 (52) | 0.51 (0.27, 0.96) |
25 to <50% | 55 (45) | 51 (37) | 1.00 |
≥50% | 26 (21) | 15 (11) | 1.70 (0.71, 4.05) |
Age 45 to <50 years | |||
<25% | 36 (33) | 57 (45) | 0.60 (0.31, 1.16) |
25 to <50% | 54 (49) | 57 (45) | 1.00 |
≥50% | 20 (18) | 13 (10) | 1.70 (0.68, 4.22) |
Age 50–54 years | |||
<25% | 51 (51) | 53 (47) | 0.98 (0.52, 1.87) |
25 to <50% | 43 (43) | 47 (42) | 1.00 |
≥50% | 6 (6) | 13 (12) | 0.51 (0.16, 1.87) |
p interaction | 0.06 |