attrition in heterogeneous cohorts

Clicks: 246
ID: 172787
2010
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Abstract
In a heterogeneous cohort, the change with age in the force of mortality or some other kind of hazard or intensity of attrition depends on how the hazard changes with age for the individuals in the cohort and on how the composition of the cohort changes due to the loss of those most vulnerable to attrition. Here we prove that the change with age for the cohort equals the average of the change in the hazard for the individuals in the cohort minus the variance in the hazard across individuals. The variance captures the compositional change. This very general and remarkably elegant relationship can be applied to understand and to analyze changes with age in many kinds of demographic hazards, including, e.g., the lifetable aging rate or the intensity of first births.
Reference Key
vaupel2010demographicattrition Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;James Vaupel;Zhen Zhang
Journal journal of urban planning and development
Year 2010
DOI
DOI not found
URL
http://www.demographic-research.org/volumes/vol23/26/
Keywords
demography population vital events

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