Questions a-d are based on the following information the death rate per 100,000 for breast cancer is 25 among hormone replacement therapy (hrt) users and 15 among non-hrt users. the prevalence of hrt use in the population is 70% make the following calculations. (3 points each) the relative risk of dying for an hrt user compared to a non-user is: a b. what is the excess risk of breast cancer in those who used hrt? what is the percentage of breast cancer in the hrt users that can be attributed to hrt? what is the percentage of breast cancer in the population that can be attributed to hrt? d. 19