prospective cohort study prospective cohort study

A prospective cohort study is a type of observational study that follows a group of individuals over a period of time, typically years or decades, to investigate the relationship between an exposure or risk factor and an outcome of interest.

In a prospective cohort study, a group of individuals without the outcome of interest is identified at the beginning of the study, and their exposure status is determined. The individuals are then followed up over time, and the incidence of the outcome of interest is measured.

Prospective cohort studies are useful for studying the natural history of diseases, identifying risk factors for disease, and studying the effectiveness of interventions. They can provide valuable information on the temporal relationship between exposure and outcome and can help identify potential confounding factors that may affect the relationship.

However, prospective cohort studies can be expensive and time-consuming, and they may suffer from participant attrition, measurement bias, and confounding. Additionally, they cannot establish causation, as there may be other factors that contribute to the relationship between exposure and outcome.

Updated: April 30, 2023 — 1:04 pm

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