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All diseases are the result of inherited traits.
Selective Attrition
The process by which participants drop out of a study over time, potentially leading to biased results if the departures are not random but related to the study's characteristics.
Long-term Studies
Research investigations conducted over extended periods of time, often years, to track changes or developments in subjects or phenomena.
Random Assignment
A method used in experiments to evenly distribute individuals across various treatment groups, ensuring that each group is similar at the start of the study.
Cohort
A group of individuals sharing a common characteristic, typically shared within a defined time frame, often used in studies to compare changes over time or across different groups.
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