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PBH321: INTRODUCTION TO EPIDEMIOLOGY M4: Check Your Understanding! Quiz Instructions A knowledge self-check to gauge your personal understanding of the material

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PBH321: INTRODUCTION TO EPIDEMIOLOGY
M4: Check Your Understanding!
Quiz Instructions
A knowledge self-check to gauge your personal understanding of the material. This self-check is not graded.
Question 1
You hypothesize that a new diet soda is causing an increase stomach cancer.  What study design would you use?
Group of answer choices
 
A cross sectional study
 
An ecologic study
 
An RCT study
Question 2
You conduct your epidemiologic study and your findings are summarized in the 2x2 table below.  If you were calculating a relative risk, what would it be?
     Stomach cancer - Yes    Stomach cancer - No    Total
Consume diet soda? - Yes    25    15    40
Consume diet soda? - No    25    15    40
Total    50    30    80
Question 3
Using the same table, if you were calculating an odds ratio, what would it be?
Question 4
What would your interpretation be of the measure of association (positive, negative, or no association)?
Group of answer choices
 
There is a positive association; the odds of stomach cancer is higher among people who consume diet soda than those who do not.
 
There is no association between consuming diet soda and stomach cancer.
 
There is a negative association; the odds of stomach cancer is lower among people who consume diet soda than those who do not.