Fig. 2.

Odds ratios (95% confidence interval) of developing breast cancer by cross-classified AR and Ki67 expression in normal breast TDLUs. ORs are estimated from unconditional logistic regression models among 57 cases and 195 controls and are adjusted for age at cancer diagnosis/index date, year of BBD biopsy, time between BBD diagnosis and breast cancer diagnosis/index date, and BBD lesion type. AR and Ki67 are dichotomized at their median levels (20% for AR and 4% for Ki67). P value for test of heterogeneity is 0.75