The Role of the Nottingham Prognostic Index in Determining Survival Outcomes of Triple Negative Breast Cancer Patients at Prof. Dr. I.G.N.G. Ngoerah Hospital Ni Made Tuban Ening Widiana1*, I Made Mahayasa2, Ida Bagus Made Suryawisesa3 Abstract Background: Triple Negative Breast Cancer (TNBC) is a subtype of breast cancer that does