Table 1:

Characteristics of the Screening Sample Used for Phenotype Identification

Note.—Unless otherwise specified, data are means ± standard deviations. BCSC = Breast Cancer Surveillance Consortium, BI-RADS = Breast Imaging Reporting and Data System.

*P values for comparison of sample characteristics across training and test samples were calculated with Wilcoxon rank-sum test for continuous variables and Pearson χ² test for categorical variables.

^†Data are numbers, with percentages in parentheses.