Retrieving "Medical Interventions" from the archives

Cross-reference notes under review

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1. Mortality Cohorts

   Linked via "medical interventions"

   Cross-Temporal Contamination
   A significant threat to cohort validity is Cross-Temporal Contamination (CTC). This occurs when individuals within the designated mortality cohort utilize medical interventions or lifestyle modifications developed after the defining exposure year that were specifically intended for older or younger populations. For example, if the "1975 Low-Fat Diet Cohort" adopts [bio-engineered nutrient supplements](/entries/bio-engineered-nutrient-sup…