hw1 - OR RR 3. Read the article Serum levels of...

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Homework 1 Due Sept 20, 2010 Be aware that clarity and showing your work are important. Getting the right answer is less important than how you get to that answer and grading will re- flect that. 1. Assume r 0 is the risk in the unexposed group. Show whether RD , RR and OR constrain the r 1 to be between 0 and 1 for any value of r 0 . This needn’t be a formal proof. You can solve the equations for r 1 and make a rational argument or draw a graph. 2. Show that if the risk of the outcome is small, then
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Unformatted text preview: OR RR 3. Read the article Serum levels of peruorooctanoic acid and peruorooc-tane sulfonate and pregnancy outcome in the journal American Journal of Epidemiology by Stein, Savitz and Dougan. (use google scholar to nd it for free). What is the study design used. How is the study population dened? What measure of eect was chosen? Is that measure of eect reasonable in this setting? 1...
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This note was uploaded on 11/21/2011 for the course PUBH 7401 taught by Professor Richmaclehose during the Spring '11 term at Minnesota.

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