Table 1.
Characteristics of GUTS girls by family history of breast cancer or maternal BBD (GUTS girls: N=67 biopsy-confirmed BBD cases, 6741 non-cases).
| Family History Disease Group: | |||||
|---|---|---|---|---|---|
| FamHist None* | Mother BBD | Mother BC | Aunt BC | Grandmother BC | |
| GUTS girls N= | 4678 | 1264 | 260 | 237 | 749 |
| GUTS BBD cases N= (biopsy-confirmed) | 35 | 18 | 5 | 6 | 10 |
| Percent BBD cases(%) | 0.75 | 1.42 | 1.92 | 2.53 | 1.34 |
| Risk Factor Means: | |||||
| Baseline age (yrs) | 12.0 | 12.1 | 12.0 | 12.1 | 12.1 |
| Adoles Alcohol (drinks/day) | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| PHV (inch/yr) | 3.4 | 3.3 | 3.3 | 3.6 | 3.3 |
| Menarche age (yr) | 12.8 | 12.9 | 12.8 | 12.9 | 12.9 |
| Adult height (in) | 65.4 | 65.3 | 65.3 | 65.2 | 65.4 |
| Childhood BMI (kg/m2) | 18.2 | 17.9 | 18.4 | 18.1 | 18.1 |
| BMI change (kg/m2) | 4.5 | 4.5 | 4.5 | 4.2 | 4.3 |
| Young Adult BMI (kg/m2) | 23.7 | 23.5 | 23.9 | 23.3 | 23.5 |
| Adoles Waist circumf (inch) | 29.5 | 29.2 | 29.5 | 29.3 | 29.5 |
*
“FamHist None” group omits girls with either maternal BBD or family history of breast cancer.