Please submit your write-up of no more than 400 words: 

What is the association between coffee drinking and risk of Parkinson’s disease? 

In your write-up, address each of the following points:

• Choose one of these three study designs to answer your research question: a cohort study, case-control study, or cross-sectional study. Justify why you are picking that study design. In other words, provide at least one strength of your chosen study design for addressing your chosen research question. 

• Identify the target population for your study. 

• Identify the source population for your study. 

• How is the exposure defined in your study? When and how will it be measured? 

• What are the main comparison groups of participants in your study? 

• How is the main outcome defined in your study? When and how will it be measured? 

• For the main outcome of interest in your study, what measure of disease frequency would be most appropriate, and why? 

• What measure of association (between the exposure and outcome) would be most appropriate for your chosen study design and research question, and why?