Suppose that you have been hired by university student health services to design a case-control study to assess the following hypothesis among undergraduate students
Suppose that you have been hired by university student health services to design a case-control study to assess the following hypothesis among undergraduate students:
Irregular sleep patterns increase the risk of headaches.Be sure that your design addresses the following elements:
- Refine the study hypothesis so that it is as specific as possible and contains all elements of a “good” hypothesis.
- How will you identify and define the cases?
- Are there any exclusion criteria that you would apply?
- How will you sample from the underlying population for your “controls”?
- Who will you select as controls?
- How will you select them?
- How will you define the exposure of interest?
- How will you collect the information on exposure?
- What other information do you want to know about participants that may be related to the exposure of interest and/or the outcome (potential confounders)? Of these, what will you be able to collect and what will you be unable to collect?
- Which measures of disease frequency and association will you calculate?
- What are the strengths and limitations of your study?
- Which limitations could be removed by using a different study design?
- What other information would you like to know to design this study?