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Cross-sectional vs longitudinal exampleYou want to study the impact that a low-carb diet has on diabetes. A cross-sectional study is a cheap and easy way to gather initial data and identify correlations that can then be investigated further in a longitudinal study. While cross-sectional studies collect data from many subjects at a single point in time, longitudinal studies collect data repeatedly from the same subjects over time, often focusing on a smaller group of individuals that are connected by a common trait.īoth types are useful for answering different kinds of research questions. The opposite of a cross-sectional study is a longitudinal study. Frequently asked questions about cross-sectional studies.Advantages and disadvantages of cross-sectional studies.Cross-sectional vs longitudinal studies.
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