Explanatory Notes on Main Statistical Indicators
Explanatory Notes on Main Statistical Indicators
Total Population refers to the total number of people
alive at a certain point of time within a given area.
The annual statistics on total population is
taken at midnight, the 3lst of December, not including residents in
Urban Population and Rural Population Urban population refers to all people
residing in cities and towns, while rural population refers to population other
than urban population.
Birth Rate (or Crude Birth Rate) refers to the ratio of the number of
births to the average population (or mid-period population) during a certain
period of time (usually a year), expressed in ‰. Birth rate in the
chapter refers to annual birth rate. The following formula is used:
×1000‰
Number of births in the formula refers to
live births, i.e. when a baby has breathed or showed any vital phenomena
regardless of the length of pregnancy.
Annual average population is the average of
the number of population at the beginning of the year and that at the end of
the year. Sometimes it is substituted by the mid-year population.
Death Rate (or Crude Death Rate) refers to
the ratio of the number of deaths to the average population (or mid-period
population) during a certain period of time (usually a year), expressed in ‰. Death
rate in the chapter refers to annual death rate. The following formula is used:
Natural Growth Rate of Population refers to the ratio of natural increase
in population (number of births minus number of deaths) in a certain period of
time (usually a year) to the average population (or mid-period population) of
the same period, expressed in ‰. The following formula is applied:
×1000‰
Natural Growth Rate of Population = Birth
Rate-Death Rate
Gross Dependency Ratio also
called gross dependency coefficient, refers to the ratio of non-working-age
population to the working-age population, express in %. Describing in general
the number of non-working-age population that every 100 people at working ages
will take care of, this indicator reflects the basic relation between
population and economic development from the demographic perspective. The gross
dependency ratio is calculated with the following formula:
Where: GDR is the gross dependency ratio,
P0-14 is the population of children aged 0-14,
P65+
is the elderly population aged
65 and over, and
P15-64 is the working-age population aged
15-64.
Old Dependency Ratio also called old dependency coefficient,
refers to the ratio of the elderly population to the working-age population, express
in %. It describes the number of the elderly population that every 100 people
at working ages will take care of. Old dependency ratio is one of the
indicators reflecting the social implication of population aging from the
economic perspective. The old dependency ratio is calculated with the following
formula:
Where: ODR is the old dependency ratio,
P65+
is the elderly population aged 65 and over, and
P15-64 is the working-age population aged
15-64.
Children Dependency Ratio also
called children dependency coefficient, refers to the ratio of the children
population to the working-age population, express in %. It describes the number
of children population that every 100 people at working ages will take care of.
The children dependency ratio is calculated with the following formula:
Where: CDR is the children dependency ratio,
P0-14
is the children population aged 0-14, and
P15-64 is the working-age population aged 15-64.