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Vienna Institute of Demography Working Papers No. 8/2011
Austrian Academy of Sciences (ÖAW), Vienna Institute of Demography (VID), Vienna
The relation between the hazard rate and its derivative at modal age at death, an equivalent to which has been featured by Pollard (1991), Canudas-Romo (2008), Thatcher et al. (2010), and Tuljapurkar and Edwards (2011), is presented as a handy tool in studying mortality compression in its period and cohort dimensions. Our analytical findings indicate birth cohorts to differ substantially from the period life tables with respect to the distribution of deaths around the mode. Empirical results support theoretical predictions and show that previously reported effect of compression of deaths above the mode might be a feature of period life tables and not of the cohort mortality schedules. Our results are also useful in computing the modal age at death and sensitivity analysis.
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Working Paper

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