Figure 4.

Example of a feature with the same direction for the correlation of the feature with breast cancer risk and percentage mammographic density (PMD). Patients with mammograms like that on the left had low values for the feature "SDH (0.5 cm) difference of contrast" and had a low predicted risk of breast cancer. Patients with mammograms like that on the right had high feature values, a high risk of breast cancer, and a high mammographic density. The Spearman correlation with PMD for this feature was +0.54.