The PAT score is calculated by adding the points assigned to every family member with a breast or ovarian cancer diagnosis, including 2nd and 3rd degree relatives. A separate score is calculated for both the maternal and paternal lineage and the higher of the 2 scores is assigned to the participant. Validation data from this model demonstrate that the PAT score was more accurate than the modified Gail model at identifying women with a hereditary risk of breast cancer. Area under the ROC curve for the PAT was 0.9625 compared to 0.389 and 0.5861 for 5-year and lifetime Gail estimates respectively. a PAT score of greater than or equal to 8 provided the most accurate discrimination between "high risk" and "not high risk" women with a sensitivity of 100 percent specificity of 93 positive predictive value of 63 percent and negative predictive value of 100 percent.