Figure 2: Screenshot of the ABB interface for Analyzing the Variables “INV: Yes/no” and “Ethnicity_Binned”. These two variables are shown in rows. “INV: Yes/no” is a patient’s invasive breast cancer status and Ethnicity_Binned is a patient’s self reported ethnicity. The columns are patient count, local percentage and average age. The hierarchical view shows the drill down option: from “INV: Yes/no” to “Ethnicity_Binned”.