In this paper I explore the formal relationship between period and cohort mortality, focusing on a comparison of … and Feeney that the level of period is distorted, or biased, due to changes in the timing of mortality. I show that their … year for a hypothetical population subject to observed historical mortality conditions but with a constant annual number of …

Life expectancy is overestimated if mortality is declining and underestimated if mortality is increasing. This is the … arguments about "tempo effects on mortality". This Reflexion explains why this claim is true in most heterogeneous populations … methods. Finally, it speculates that there may be a deep connection between tempo and heterogeneity. …

In a heterogeneous cohort, the change with age in the force of mortality or some other kind of hazard or intensity of …

these measures and their empirical testing on mortality data suggest a possibility for different judgements about the … decomposition of age-components into effects of mortality and composition of population by group is developed. Temporal changes in … computed from various types of mortality data of France, Japan, Sweden and the USA in 1900-95, decompositions of the USA …

centenarians largely depends on mortality features between 80 and 100 years. This study aims to cast light on our knowledge of … elderly mortality differentials, total and by cause of death, in Sardinia, and attempts to verify this hypothesis. To do so …, an analysis is conducted of age and sex mortality trends over time at province and municipality level. Results fully …