Table 1.
Longitudinal mammographic percent density among ER-positive breast cancer patients treated with tamoxifen (N=40).
| Calculated mean percent density (SD) | Calculated mean differencea in percent density (SD) | Adjusted mean differencea, b in percent density (SE) | |
|---|---|---|---|
|
|
|||
| Baseline | 26.5 (18.0) | ||
| T1 | 22.0 (12.3) | -4.5 (11.4) | -2.0 (1.2) |
| T2 | 20.2 (12.7) | -1.7 (7.6) | 0.0 (1.2) |
| T3 | 19.1 (12.1) | -1.1 (6.9) | 0.5 (1.1) |
| T4 | 18.6 (11.3) | -0.3 (5.8) | 1.1 (0.9) |
| T5 | 19.3 (11.4) | 0.6 (6.7) | 2.1 (1.1) |
a
Mean difference, compared to previous year
b
Estimated using linear regression, adjusted for baseline percent density (ordinal tertiles)
SD – standard deviation; SE – standard error