exam 1 questions

# exam 1 questions - January 1 2004 to ==== in study and...

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Additional Practice Questions for... Direct Adjusted Rates 1a. Calculate the expected deaths for Florida and Oregon using the Georgia population in Table 2 as the standard population. 1b. Calculate the direct adjusted death rates for Florida and Oregon in Table 1. 1c. Pretend the crude death rate for Florida was 10.23/100,000 and the crude death rate for Oregon was 6.12/100,000. How do the direct adjusted rates change our perception of the difference between the two states' death rates? Table 1 Florida Oregon Age Population Death Rate/100,000 Expected Deaths Population Death Rate/100,000 Expected Deaths <15 3,427,499 2.23 ? 723,106 1.91 ? 15-24 2,414,202 0.89 ? 498,965 0.93 ? 25-44 4,734,381 2.05 ? 1,041,873 1.87 ? 45-64 4,939,329 8.32 ? 1,040,644 7.89 ? 65+ 3,291,808 45.76 ? 508,985 44.98 ? Total 18,807,219 ? 3,813,573 ? Table 2 Age Georgia population Deaths Rate/100,000 <15 2,396,100 32 1.34 15-24 1,542,000 9 0.58 25-44 2,135,300 30 1.40 45-64 1,960,900 140 7.14 65+ 1,068,500 529 49.51 Total 9,102,800 Person-time 2. The table below is based on observations of a cohort of 10 individuals in a study of diabetes from

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Unformatted text preview: January 1, 2004 to December 31, 2008. ==== in study and healthy; &amp;gt;&amp;gt;&amp;gt;&amp;gt; have disease; D died Assume death occurs on the last day of the year but entering the study or getting diagnosed with the disease occurs on the first day of the year. Person 1 ==== ==== ==== Person 2 ==== ==== &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; Person 3 ==== ==== &amp;gt;&amp;gt;&amp;gt;&amp;gt; Person 4 ==== ==== ==== ==== D Person 5 &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; Person 6 ==== ==== ==== Person 7 ==== &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; &amp;gt;&amp;gt;&amp;gt;&amp;gt; Person 8 &amp;gt;&amp;gt;&amp;gt;&amp;gt; D Person 9 ==== ==== ==== ==== &amp;gt;&amp;gt;&amp;gt;&amp;gt; Person 10 ==== ==== ==== &amp;gt;&amp;gt;&amp;gt;&amp;gt; 2004 2005 2006 2007 2008 a. What is the total number of person-years of healthy time for this population over the entire follow-up period? b. Calculate the incidence density for the entire follow-up period. c. Calculate the incidence density for the period between January 1, 2005 and December 31, 2007....
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