Motivated by our meta-analytic dataset involving survival rates after treatment for critical leg ischemia, we develop and apply a new multivariate model for the meta-analysis of study level survival data at multiple times. Our data set involves 50 studies that provide mortality rates at up to seven time points, which we model simultaneously, and we compare the results to those obtained from sta...

The evolutionary theory of aging suggests that the level of repair will evolve to an intermediate optimum that permits the accumulation of random damage to cells. This, in turn, causes a decline in essential functions during the life span of an organism. The central claim of the life history theory of aging is that intrinsic mortality rates evolve in response to changes in extrinsic mortality r...

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the current pandemic of coronavirus disease 2019 (COVID-19). This pandemic is characterized by a high variability in death rate (defined as the ratio between the number of deaths and the total number of infected people) across world countries. Several possible explanations have been proposed, but it is not clear whe...

background: improving the neonatal health and reducing the neonatal mortality rate is valuable for not only health reasons, but social, psychological and economic reasons. it has advantages not just for the neonatal period of life but for the whole life. unfortunately in iran, in spite of efforts, there has been little success in decreasing the neonatal mortality rate. since investigating the c...

background: evaluating the tuberculosis (tb) status of theeconomic cooperation organization (eco) member countriesrelation to goal 6-c of the third millennium, which includes thattb incidence, prevalence, and death rates should be halved by2015, compared with their level in 1990.methods: in 2009, we have critically reviewed the countries’millennium development goals (mdgs) reports and extracted...