From: Using mammographic density to predict breast cancer risk: dense area or percentage dense area
Adjusted for Dense Area | ||||||||
---|---|---|---|---|---|---|---|---|
Measurement | Cases (n) | Controls (n) | ORb | 95% CIc | P value | OR | 95% CI | P value |
Dense area mean (SDa) | 46.23 (34.07) | 36.50 (29.36) | ||||||
Q1: 0.00-11.69 cm2 | 86 | 416 | 1.00 | - | - | - | ||
Q2: 11.70-26.24 cm2 | 114 | 389 | 1.41 | 1.02-1.94 | 0.04 | - | ||
Q3: 26.31-39.95 cm2 | 117 | 386 | 1.50 | 1.08-2.07 | 0.014 | - | ||
Q4: 39.99-59.87 cm2 | 142 | 361 | 1.94 | 1.41-2.66 | < 0.001 | - | ||
Q5: 59.92-201.49 cm2 | 175 | 328 | 2.85 | 2.09-3.90 | < 0.001 | - | ||
P for trend | < 0.001 | |||||||
Percentage dense area (PDA) Mean (SD) | 29.30 (19.24) | 23.81 (17.91) | ||||||
Q1: 0.00-7.01% | 85 | 417 | 1.00 | - | - | - | - | |
Q2: 7.02-18.08% | 126 | 377 | 1.62 | 1.18-2.21 | 0.003 | 1.32 | 0.78-2.21 | 0.3 |
Q3: 18.09-28.33% | 115 | 388 | 1.46 | 1.06-2.01 | 0.022 | 0.96 | 0.52-1.75 | 0.9 |
Q4: 28.37-40.84% | 136 | 367 | 1.89 | 1.38-2.60 | < 0.001 | 1.02 | 0.54-1.91 | 0.95 |
Q5: 40.86-84.74% | 172 | 331 | 2.71 | 1.98-3.71 | < 0.001 | 1.25 | 0.65-2.40 | 0.5 |
P for trend | < 0.001 | 0.7 | ||||||
Nondense area mean (SD) | 123.89 (65.79) | 131.66 (64.28) | ||||||
Q1: 10.11-74.59 | 144 | 358 | 1.00 | - | - | - | - | |
Q2: 74.59-104.07 | 146 | 357 | 0.97 | 0.74-1.28 | 0.83 | 1.02 | 0.77-1.35 | 0.9 |
Q3: 104.14-134.70 | 116 | 387 | 0.73 | 0.54-0.98 | 0.04 | 0.83 | 0.62-1.13 | 0.2 |
Q4: 134.81-180.79 | 110 | 393 | 0.65 | 0.49-0.87 | 0.004 | 0.78 | 0.58-1.06 | 0.1 |
Q5: 181.07-456.33 | 118 | 385 | 0.80 | 0.60-1.08 | 0.15 | 1.08 | 0.79-1.49 | 0.6 |
P for trend | 0.02 | 0.7 |