Which epidemiological method is essentially the same as a longitudinal study?

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A longitudinal study is a type of observational study that follows a group of individuals over time, collecting data at multiple time points. A prospective study is a similar type of observational study where individuals are followed over time to observe outcomes. Therefore, a prospective study is essentially the same as a longitudinal study. Retrospective studies, randomized clinical trials, and meta-analyses are different types of epidemiological methods.

Which Epidemiological Method Is Essentially the Same as a Longitudinal