Characteristic | F batch | P batch | p valuea |
---|---|---|---|
N = 96 | N = 55 | ||
Age at biopsy (years) | Â | Â | .73 |
 Mean | 44.75 | 45.36 |  |
Age at menarche (years) | Â | Â | .73 |
 Mean | 12.57 | 12.49 |  |
Parity (live births) | Â | Â | .21 |
 Mean | 2.18 | 2.00 |  |
Age at first birth (years) | Â | Â | .04 |
 Mean | 27.56 | 25.82 |  |
BMI (kg/m2) | Â | Â | .31 |
 Mean | 30.32 | 28.87 |  |
Family historyb | Â | Â | .76 |
 Percent positive | 25.0% | 23.62% |  |
Gail 5 year risk scores |  |  | .51 |
 Mean | 1.34% | 1.17% |  |