3 Questions
What is a case series?
A series of reports about the same phenomenon, usually published after the first report
What is the ideal order of events in a cross-sectional study?
Exposure followed by outcome
What is an example of a cross-sectional study?
A study of the association between uric acid levels and hypertension
Study Notes
- A case series is a series of reports about the same phenomenon, usually published after the first report about a particular phenomenon has been published.
- A cross-sectional study is a study in which data on both exposure and outcome are determined at the same time.
- Exposure rates are calculated in each group, and then these rates are compared.
- Ideally, exposure should always precede outcome in studies like these.
- For example, if the researcher is studying the association between uric acid levels and hypertension, and on analysis finds that higher uric acid levels are associated with higher blood pressure levels, this would be a result of a study that is a cross-sectional study.
Test your knowledge of epidemiology study designs with this quiz. Learn about case series and cross-sectional studies, and understand the importance of exposure preceding outcome in such studies.
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