With the collapse of the Soviet Union, Caucasian countries experienced remarkable migration flows, political conflicts, and deterioration of civil registration systems. The reassessment of Armenian and Georgian population after censuses carried out in the early 2000s enables to re-estimate...

The topic of this article is the exceptional longevity in Okinawa. This phenomenon should be thoroughly validated at both the individual and population levels. This contribution analyzes the demographic data available for the population of Okinawa, in order to explain the presence of large...

Humans, and many other species, suffer senescence: mortality increases and fertility declines with adult age. Some species, however, enjoy sustenance: mortality and fertility remain constant. Here we develop simple but general evolutionary-demographic models to explain the conditions that favor...

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...

In this paper, we use the multiple cause-of-death approach to compare the mortality profiles of France and Italy in 2003. Our analysis leads to a substantial re-evaluation of the role played by certain conditions in the process leading to death. Regarding the associations of causes, we...