Breast Cancer Risk Calculator for Africans

This risk calculator was developed and validated using data of about 4000 women in Nigerian Breast Cancer Study (NBCS), a case-control study conducted in Ibadan, Nigeria. The NBCS Risk Calculator is an interactive tool to estimate a woman's risk of developing invasive breast cancer up to age 80 for African women. This calculator is not applicable to women younger than age 20 or who have previous diagnosis of breast cancer.” You can use the online NBCS Risk Calculator on this webpage or you can download the standalone NBCS Risk Calculator App for Windows here.


Five Year Risk
Ten Year Risk
Lifetime Risk
Average Five Year Risk
Average Ten Year Risk
Average Lifetime Risk