A study compared Miami, Florida and Boston, Massachusetts with respect
to cancer mortality between the ages of 18 and 99 years. (6 Points)
In Miami, the crude rate for death from cancer was 220 per 10,000 population per year.
In Boston, the crude rate for death from cancer was 150 per 10,000 population per year.
One concern raised by this study was the possible effect of different age distributions in the two cities. You check on the age distributions and find that Boston’s population had a much greater percentage of young people (college students and young professionals), while Miami had a larger percentage of people in the older age brackets (retired persons).
Because of the difference in age distribution, the authors of the study used direct standardization to calculate age-adjusted rates using the age distribution for the US population in 2000 as the standard.
In Miami, the age-adjusted rate for death from cancer was 108 per 10,000 population per year
In Boston, the age-adjusted rate for death from cancer was 175 per 10,000 population per year
-Did the differences in age contribute to the observed difference in the crude rates ? Why or why not?
-Your grandfather who is 65 years old and lives in Ohio is about to retire and move to Miami. However, his friend advised him not to move these because “A lot of folks get cancer down there.” So now, he is considering moving to Boston instead. Based on these data, what advice would you give him about the risk of dying from cancer in Miami as compared to Boston?
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