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Age-Specific Rates & Probabilities

Age-Specific Rates & Probabilities. September 10, 2008. Period Age-Specific Death Rates. n M x [0, T ]. Number of deaths in the age range x to x+n between time 0 and T ______________________________________________________

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Age-Specific Rates & Probabilities

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  1. Age-Specific Rates & Probabilities September 10, 2008

  2. Period Age-Specific Death Rates nMx[0,T] Number of deaths in the age range x to x+n between time 0 and T ______________________________________________________ Number of person-years lived in the age range x to x+n between time 0 and T

  3. Relationship between CDR and ASDRs • The CDR reflects the sum of all weighted ASDRs (weighted by the proportion of the population in each age group)

  4. Standardization • Eliminating/minimizing the effects of population structure when comparing rates • PROCEDURE: Multiplying each subgroup-specific rate by the proportion of the “standard” population in that subgroup

  5. Options for Standardization • Pick one population for standard • Average for 2 or more populations • Pick another population

  6. Decomposition • Determining the proportion of a difference in rates that comes from differences in population structure and the proportion that comes from a difference in rate schedules • Box 2.2 on p.30

  7. Lexus Diagrams • Graphic representation of demographic events in time and persons at risk

  8. Age Specific Probabilities nqx

  9. Infant Mortality Rate Infant deaths in a year Births in a year

  10. Mortality Crossovers(Coale & Kisker 1986) • What is a mortality crossover? • What are the two explanations for mortality crossovers?

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