Table 2.

Variables from the NMD used in our ANN

Variables	Instances
Age	Age M< 45, Age 45-50, Age 51-54, Age 55-60, Age 61-64, > 65
Hormone Therapy	None, Less than 5 years, More than 5 years
Personal History of BCA	No, Yes
Family History of BCA	None, Minor (non-first-degree family members), Major (1 or more first-degree family members)
Breast Density	Predominantly Fatty, Scattered Fibroglandular, Heterogeneously Dense, Extremely Dense
Mass Shape	Circumscribed, Ill-defined, Microlobulated, Spiculated, Not present
Mass Stability	Decreasing, Stable, Increasing, Not present
Mass Margins	Oval, Round, Lobular, Irregular, Not present
Mass Density	Fat, Low, Equal, High, Not present
Mass Size	None, Small (< 3 cm), Large (≥ 3 cm)
Lymph Node	Present, Not Present
Asymmetric Density	Present, Not Present
Skin Thickening	Present, Not Present
Tubular Density	Present, Not Present
Skin Retraction	Present, Not Present
Nipple Retraction	Present, Not Present
Skin Thickening	Present, Not Present
Trabecular Thickening	Present, Not Present
Skin Lesion	Present, Not Present
Axillary Adenopathy	Present, Not Present
Architectural distortion	Present, Not Present
Prior history of surgery	No, Yes
Post-operative Change	No, Yes
Calc_Popcorn	Present, Not Present
Calc_Milk	Present, Not Present
Calc_RodLike	Present, Not Present
Calc_Eggshell	Present, Not Present
Calc_Dystrophic	Present, Not Present
Calc_Lucent	Present, Not Present
Calc_Dermal	Present, Not Present
Calc_Round	Scattered, Regional, Clustered, Segmental, Linearductal
Calc_Punctate	Scattered, Regional, Clustered, Segmental, Linearductal
Calc_Amorphous	Scattered, Regional, Clustered, Segmental, Linearductal
Calc_Pleomorphic	Scattered, Regional, Clustered, Segmental, Linearductal
Calc_FineLinear	Scattered, Regional, Clustered, Segmental, Linearductal
BI-RADS category	0, 1, 2, 3, 4, 5

Note.—BCA = Breast cancer

Calc = microcalcification.