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Under-five mortality rate is the measure of mortality level of

children in the first five years of life. This rate is defined as the number of
deaths of children under age 5 per 1000 live births in the reference period on
average.

D
U5MR  5 0  1000
B

Where:
U5MR: Under-five mortality rate;

5D 0: Number of deaths under age 5 in the reference period;

B: Total of live births in the reference period.

Natural increase rate of population is the difference between number of
live births and number of deaths to the population in the reference period. The

natural increase rate of population is expressed as a percentage or per mille.
Formula:

B - D
NIR = × 1000
P tb

Where:

NIR: Natural Increase Rate of population;

B: Total number of live births in the reference period;

D: Total number of deaths in the reference period;

P tb: Average population in the reference period.

Growth rate of population (growth rate) reflects the increase/decrease
of the population in reference period due to natural increase and net-migration.
Growth rate of population is expressed as a percentage or per mille.

In-migration rate are the number of people from different territorial
units (out-migration place) in-migrate to a territorial unit in the reference
period (usually a calendar year) on an average per 1000 population of that
territorial unit (in-migration place).

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