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IMR =
D
0
× 1000
B
Where:
IMR: Infant mortality rate;
D
0
: Number of deaths of children under one year of age in the reference
period;
B: Total of live births in the reference period.
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 1,000 live births in the reference period on average.
U5MR =
5
D
0
× 1000
B
Where:
U5MR: Under five mortality rate;
5
D
0
: Number of deaths under age 5 in the reference period;
B: Total of live births in the reference period.
Natural growth rate of population
is the difference between number of live
births and number of deaths compared to the average population during the
reference period, or the difference between the crude birth rate and the crude
death rate of population in the reference period.
NIR =
B - D
× 1000 = CBR - CDR
P
Where:
NIR: Natural growth rate of population;
B: Number of live births in the reference period;
D: Number of deaths in the reference period;
P: Population up to the reference time-point.
CBR: Crude birth rate
CDR: Crude death rate
Total growth rate of population
(or "population growth rate") reflects the
increase or the decrease of the population in one period expressed as a percentage.
In-migration rate
reflects the number of people from different territorial units
(out-migration place) in-migrates to a territorial unit in the reference period on
average per 1000 population of that territorial unit (in-migration place).