| No EPT (N= 1,176) | Past EPT (N= 612) | Current EPT (N= 248) |  |  | |||||
---|---|---|---|---|---|---|---|---|---|---|
 | N | Mean1 | SE2 | N | Mean1 | SE2 | N | Mean1 | SE2 | P3 |
Mammographic density (%) | 1,176 | 17.07 | 0.46 | 612 | 18.99 | 0.45 | 248 | 23.34 | 0.51 | 0.0001 |
Age at screening (years) | 1,176 | 58.19 | 0.18 | 612 | 59.22 | 0.15 | 248 | 57.33 | 0.15 | 0.0001 |
Body mass index (kg/m 2 ) | 1,176 | 25.44 | 0.13 | 612 | 24.91 | 0.10 | 248 | 24.15 | 0.11 | 0.0001 |
Age at menarche (years) | 1,169 | 13.16 | 0.04 | 607 | 13.36 | 0.04 | 246 | 13.31 | 0.04 | 0.1025 |
Age at first pregnancy (years) | 1,049 | 21.75 | 0.25 | 540 | 22.3 | 0.24 | 225 | 22.28 | 0.24 | 0.3602 |
Number of children | 1,114 | 2 | 0.03 | 587 | 2 | 0.03 | 239 | 2 | 0.03 | 0.7252 |
Education (years) | 1,164 | 12.75 | 0.10 | 605 | 13.01 | 0.10 | 245 | 12.85 | 0.10 | 0.2807 |