Study Design — Flashcards

Which type of observational study is best for studying rare diseases? _____

How big is the difference between probability and odds when the value of probability is small (<10%)? _____

If 2% of patients who receive a flu shot develop the flu, while 8% of unvaccinated patients develop the flu, relative risk reduction is _____

Is effect modification a form of bias?_____

What statistical test is used to check differences between the means of THREE or more groups? _____

Prevalence is _____ to incidence for short duration disease (e.g. common cold)

How does the width of a 95% confidence interval change with a decreased sample size? _____

What type of bias is likely to occur in when asking patients with disease versus patients without disease about prior risk factors? _____

What is a source of hepatitis A virus in developing countries?_____

Case-control studies are almost always _____-spective