Relative risk compares the risk of a problem with a particular treatment. If we take the example of HRT, 7.5% of women aged fifty will develop breast cancer by the age of seventy-five whereas 9% of these women will develop breast cancer by the age of seventy five if they take HRT for fifteen years. The relative risk is 9 to 7.5 or 1.2.


Women's Health



women's health


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