Table 3.

Risk of biopsy-confirmed BBD in young females with family history of breast cancer (BC), maternal BBD, and in females with no family history. Odds ratios were obtained from age-adjusted logistic regression models.

Family History	Breast Cancer in Affected Family Member			BBD	None
	Mother or Aunt	Grandmother	Any Family Member (Mother, Aunt, Grandm)	BBD in Mother	No Family History
GUTS girls N=	477	749	1157	1264	4678
GUTS BBD cases N=	10	10	19	18	35
Risk Factor OR (p-value):
Adoles Alcohol (daily drink)	3.80 (.02)	2.29 (.04)	2.28 (.01)	1.96 (.02)	1.22(.57)
PHV (inch/yr)	1.82 (.05)	0.71 (.51)	1.21 (.49)	1.31 (.44)	1.08 (.70)
Menarche age (yr)	1.21 (.47)	1.08 (.77)	1.05 (.78)	1.00 (.99)	1.12 (.42)
Young adult height (inch)	0.95 (.67)	0.93 (.54)	0.96 (.64)	1.07 (.44)	1.11(.08)
Childhood BMI (kg/m2)	1.00 (.97)	0.83 (.16)	0.93 (.37)	0.99 (.90)	0.88 (.055)
BMI change (kg/m2)	1.03 (.72)	1.06 (.59)	1.04 (.58)	1.05 (.44)	0.94 (.33)
Young Adult BMI (kg/m2)	1.02 (.81)	0.94 (.51)	0.99 (.80)	1.02 (.63)	0.91 (.06)
Adoles Waist circumfer (in)	0.92 (.51)	0.90 (.37)	0.91 (.27)	1.08 (.30)	0.86 (.02)

Note: BMI change is from baseline to young adulthood; Childhood BMI and BMI change appear together in models.