{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

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

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
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
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: OR ≈ RR 3. Read the article ”Serum levels of perfluorooctanoic acid and perfluorooc-tane sulfonate and pregnancy outcome” in the journal ”American Journal of Epidemiology” by Stein, Savitz and Dougan. (use google scholar to find it for free). What is the study design used. How is the study population defined? What measure of effect was chosen? Is that measure of effect reasonable in this setting? 1...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online