Longitudinal cohort study
Longitudinal Cohort Study
A Longitudinal Cohort Study is a type of observational study where the same population or cohort is studied over a period of time. This type of study is often used in medicine and psychology to study long-term effects and trends.
Overview[edit | edit source]
In a Longitudinal Cohort Study, a group of individuals who share a common characteristic or experience within a defined period (i.e., a cohort) are studied. This group is followed over time to observe the effects of certain variables or interventions. This type of study is particularly useful for studying disease progression, the effectiveness of treatments, and changes in health behavior.
Methodology[edit | edit source]
The methodology of a Longitudinal Cohort Study involves selecting a cohort and observing them over a period of time. The cohort can be selected based on a variety of factors, including age, gender, health status, and exposure to certain variables. The study then collects data at regular intervals to track changes and outcomes.
Advantages and Disadvantages[edit | edit source]
Advantages[edit | edit source]
Longitudinal Cohort Studies have several advantages. They can provide detailed information about the sequence of events leading to an outcome, and they can control for confounding variables. They are also able to study rare outcomes and changes over time.
Disadvantages[edit | edit source]
However, these studies also have some disadvantages. They can be time-consuming and expensive, and they may suffer from attrition bias due to loss of participants over time. They may also be affected by recall bias if participants are asked to remember past events.
See Also[edit | edit source]
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References[edit | edit source]
External Links[edit | edit source]
- Longitudinal Cohort Studies: A Practical Guide
- World Health Organization: Longitudinal Cohort Studies
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