Life expectancy, that is the mean age at death in a life table, is the most common measure used to describe and compare mortality distributions. Alternatives to life expectancy that have been proposed so far have also referred to only a single parameter of the mortality distribution. We propose to study mortality distributions by applying Silber’s concept of the Equivalent Length of Life (ELL),...

Life tables provide a means of measuring the schedules of birth and death from populations over time. They also can be used to quantify the sources and rates of mortality in populations, which has a variety of applications in ecology, including agricultural ecosystems. Horizontal, or cohort-based, life tables provide for the most direct and accurate method of quantifying vital population rates ...

Quasi-life tables, in which the data arise from many concurrent, independent, discrete-time renewal processes, were defined by Baxter (1994, Biometrika 81:567-577), who outlined some methods for estimation. The processes are not observed individually; only the total numbers of renewals at each time point are observed. Crowder and Stephens (2003, Lifetime Data Anal 9:345-355) implemented a forma...

How does saving lives a f fec t t h e f o r c e of mortality and l ifetable s ta t is t ics? How can t h e p r o g r e s s being made in reducing t h e f o r c e of mortality b e in te rp re ted in terms of lifesaving? How many times can a person e x p e c t t o have his or h e r life saved as a resu l t of th i s p rogress? W e develop a model t o answer these questions and i l lus t ra te t h...

This paper proposes a life-like presentation agent system called TablePresenter. In the TablePresenter, a user edits a table on Microsoft Excel, and also specifies the presentation contents for explaining the table in the form of tree structure, called presentation tree. The system then generates animated presentation by an agent. Presentation trees have intermediate nodes labeled as “contrast”...

Presented analysis of human and fly life tables proves that with the specified accuracy their entire survival and mortality curves are uniquely determined by a single point (e.g., by the birth mortality q(0)), according to the law, which is universal for species as remote as humans and flies. Mortality at any age decreases with the birth mortality q(0). According to life tables, in the narrow v...

"Conventional census-based measures of population mobility are conceptually abstruse, ignore multiple moves and obscure the diversity of human migration experience. This paper explores three alternatives and outlines their strengths and limitations. Application of life table techniques to convert transition rates to migration expectancies generates measures that are more readily understood, aut...

The rapid increase in twinning rates in developed countries has increased interest in the question as to whether twin mothers have higher mortality and more health problems than mothers of singletons. Here we use a national survey, the Office for National Statistics Longitudinal Study of England & Wales, and a linkage between the Danish Twin Registry and the Danish population register to examin...

background: multiple sclerosis (ms) is one of the most common chronic diseases of the central nervous system. the aim of this study was to determine the effectiveness of psychological training combined‎ with gradual muscular stress relaxation technique on qol of patients with ms. materials and methods: this triple-blind, controlled, clinical trial was conducted on 60 patients with ms who were m...

background : multiple sclerosis (ms) is an autoimmune disease with unknown factor. the prevalence and incidence rate of this disease had an upward trend in many regions in the world such as middle east and consequently in iran over the recent years. as the risk factors of this increased trend and high-prevalence is unknown in iran, the current study has been designed to evaluate the correlation...