Comparison of mortality rates due to cancer of the uterus in users and non-users
ID: 3323572 • Letter: C
Question
Comparison of mortality rates due to cancer of the uterus in users and non-users of supplemental estrogen revealed:
Mortality rates per 100,000
Age in years
45-54
55-70
Users of estrogen
3.0
17.0
Non-users of estrogen
1.0
6.0
A valid conclusion derived from the above data concerning the association of estrogen use with mortality due to uterine cancer is:
A. Among women 45-54 years of age, those who use estrogen are 2.83 times as likely to die from uterine cancer compared with those who do not use estrogen.
B. Among women 55-70 years of age, those who use estrogen are 2.83 times as likely to die from uterine cancer compared with those who do not use estrogen.
C. Among women 55-70 years of age, those who use estrogen are 3.0 times as likely to die from uterine cancer compared with those who do not use estrogen.
D. Among women 55-70 years of age, those who use estrogen are 0.35 times as likely to die from uterine cancer compared with those who do not use estrogen.
E. None of the above
Mortality rates per 100,000
Age in years
45-54
55-70
Users of estrogen
3.0
17.0
Non-users of estrogen
1.0
6.0
Explanation / Answer
Solution : Option ( B )= Among women 55-70 years of age, those who use estrogen are 2.83 times as likely to die from uterine cancer compared with those who do not use estrogen.
likelyness of dying from uterus cancer of women who use estrogen compared to women who do not use
estrogen among 45 - 54 years of age = 3.0 / 1.0 = 3
likelyness of dying from uterus cancer of women who use estrogen compared to women who do not use
estrogen among 55 - 70 years of age = 17.0 / 6.0 = 2.8333
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