| A number of factors may have an effect on breast | | | | a diagnosis with a later stage than white women. |
| cancer incidence and play a part to variations in rates | | | | - In the age groups, 30-54 and 55-69 years, |
| over time and amongst populations. One such factor | | | | African-American contain the uppermost death rate |
| is hormone replacement therapy (HRT). Data | | | | from breast cancer followed by Hawaiian and white |
| collected, partly, through the National Institute of | | | | non-Hispanic women On the other hand, in the 70 |
| Health's Women's Health Initiative advocated an | | | | year old age group, the death rate for white women |
| enlarged risk for invasive breast cancer amongst | | | | is upper than for African -American. |
| women who used HRT. | | | | Though really few cases of breast cancer take place |
| In accordance with the Surveillance, Epidemiology, | | | | in women in their teens or early 20s, it is the most |
| and End Results (SEER) Program of the National | | | | generally identified cancer under 35. By age 35-39 |
| Cancer Institute that: | | | | almost 1,500 are diagnosed annually. Its rates maintain |
| - White, Hawaiian, and African-American women | | | | to rise with age, with the greatest rate of raise |
| contain the highest incidence of invasive breast | | | | before the menopause. |
| cancer in the United States (just about four times | | | | However, it differs by race and ethnicity. It has been |
| higher than the lowest group). | | | | growing for several years in economically developed |
| - Korean, American Indian, and Vietnamese women | | | | countries. The incidence of postmenopausal breast |
| cover the lowest incidence of invasive breast cancer | | | | cancer is linked with screening and hormone therapy. |
| in the United States. | | | | The mechanisms that affect it in premenopausal |
| - African-American has the uppermost death rate | | | | women are less well comprehended. |
| from breast cancer and is more probable to be made | | | | |