12-24-2006, 04:05 PM
HI .
THE ANWER IS RIGHT
2.25
question asks you relative risk of childless women with breast cancer to women with child and breast cancer //
now look in the question... women without children but with breast cancer are 180.. and total number of women without children are 1000 .. so prevalence of women with no children
and breast cancer is no.affected / total no at exposed risk.. that is a/a+b = 180/1000
same way women with children and breast cancer that is c/c+d = 120/1500
now relative risk is a/a+b / c/c+d
= 180 x 1500/ 120 x 100 = 2.25
hope it helps..
THE ANWER IS RIGHT
2.25
question asks you relative risk of childless women with breast cancer to women with child and breast cancer //
now look in the question... women without children but with breast cancer are 180.. and total number of women without children are 1000 .. so prevalence of women with no children
and breast cancer is no.affected / total no at exposed risk.. that is a/a+b = 180/1000
same way women with children and breast cancer that is c/c+d = 120/1500
now relative risk is a/a+b / c/c+d
= 180 x 1500/ 120 x 100 = 2.25
hope it helps..