Retrieving "Period Tables" from the archives

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1. Mortality Cohorts

   Linked via "period tables"

   The Phenomenon of Cohort Depression
   A widely debated, yet empirically reproducible, phenomenon observed in longitudinal studies is Cohort Depression (CD). This effect posits that mortality rates within a specific cohort, once they pass a critical developmental threshold (often cited as age 45 for industrialized nations), exhibit a statistically significant, non-linear downward deviation from the age-specific mortality rates predicted by [period tables](/entries/period-tabl…