CHANGES OF MORTALITY AND RATE OF AGING IN THE SECOND HALF OF 20TH CENTURY IN RUSSIA

Abstract

Introduction. The deepening of medical and demographic problems associated with the sharp aging of the population is an obstacle to the effective socio-economic development of countries, determining the increased interest in the problem of aging. The aim of the study is to study the features and causes of changes in age mortality in Russia of the twentieth century. Material and methods. Used a table of survival for the 1960-2000 years for Russia to calculate the components of the formula of Gompertz, the intensity of mortality and its increments, using the Excel program, and developed the computer program “Aging of populations»; the adequacy of the calculated (according to the Gompertz formula) and true mortality rate was estimated by the correlation coefficient (“r”). Results. The data obtained clearly show the presence of 4 stages of mortality change: reduction of child mortality; increased mortality of working age (20-65 years); the same mortality of retirement ages (65-85 years); increased mortality in the ages of long-livers (from 85-90 years). Discussion. It can be concluded that the improvement of medical and social care for children and pensioners reduces child mortality and produces the phenomenon of “delayed mortality” of pensioners: reducing the intensity of mortality (the rate of aging) in this age period. The latter leads to the phenomenon of inversion of total mortality for ages of long-livers (from reduced to increased). Use instead of overall intensity of mortality of its increment leads to the conclusion however, that the decrease in the rate of ageing for the ages of centenarians persists. For working person age mortality is increasing, which is obviously due to the increasing stress and environmental difficulties of modern cities. During the pension period, mortality rates are equalized for all studied historical periods. The reduction of the external component of mortality of the Gompertz formula makes the graph more linear over a longer age period (the contribution of the external component of Makeham, the constant, to the exponential component of biological aging, decreases). Conclusion. The detected trends in mortality indicate the direction of preventive and socio-medical impact on the health of the population.