What is the difference between longitudinal and cross-sectional studies?
Longitudinal studies track the same subjects over time, while cross-sectional studies analyze different subjects at one point.
Can you give me an example of each type of study?
Sure! A longitudinal study could be tracking the health of a group of people over 10 years. A cross-sectional study might survey different age groups about their health at one time.
Which type of study is better for understanding changes over time?
Longitudinal studies are better for understanding changes over time because they observe the same subjects repeatedly.
Are there any drawbacks to longitudinal studies?
Yes, they can be time-consuming and expensive, and there's a risk of losing participants over time.
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