Pokrovsky Life Index

Pokrovsky life index (in honor of V.I. Pokrovsky, 1838-1915, domestic statistician; synonym - population vitality coefficient) is an indicator characterizing the level of birth and death rates in a population. It is calculated as the ratio of the number of births to the sum of the numbers of births and deaths over a certain period of time.

The index shows how actively the population is reproducing and how favorable conditions are for maintaining the population size. The higher the index value, the more active the process of population reproduction is. An index value above 0.5 indicates an expanded type of population reproduction, below 0.5 - a narrowed type.

The Pokrovsky life index is widely used by demographers and statisticians to analyze population dynamics and estimate birth and death rates. It allows you to determine population trends and identify factors influencing the demographic situation.

Pokrovsky Living Index is a statistical indicator that is used to measure the standard of living of the population. The author of this index is Vladimir Ivanovich Pokrovsky, a Russian statistician who lived from 1848 to 1904. He was one of the founders of statistics in Russia and made a significant contribution to the development of this science.

The Pokrovsky Life Index measures the proportion of the population that is below the poverty line. It is calculated as the ratio of the amount of income of people with incomes above the subsistence level to the total amount of all incomes in the country. If this index is low, then we can conclude that the majority of the population is below the poverty line and lives in extreme poverty.

In Russia, the Pokrovsky Life Index is often used to assess the state of the country's economy. During periods of economic growth, this index usually rises as the number of people who can afford to buy goods and services increases. However, if the economy is in a state of recession or crisis, then this index usually decreases,

Introduction

The Pokrovsky Life Index (PWI), proposed by Russian statistician Vladimir Ivanovich Pokrovsky (1839‒1911), is one of the key indicators of population health in the context of mortality. It serves as a measurement of the survival rate of individuals relative to life expectancy.

Purpose of the study

The purpose of the study is to study the Pokrovsky life index, its impact on demographic indicators and the possibility of using it as an indicator of population health. The article analyzes the historical origins of the indicator and gives examples related to the demographic situation in Russia at the beginning of the 20th century. The current use of PWI in statistics of developed countries to assess the level of health care is also reviewed.

Theoretical basis of Pokrovsky's vital indicator PWI Pokrovsky determined the survival rate (or vitality coefficient) using the formula: **PWI