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Formula:
D
CDR (‰) = × 1000
Ptb

Where:

CDR: Crude death rate;
D: Total of deaths in the reference period;

Ptb: Population up to the reference time-point.
Infant mortality rate is the measure of the mortality level of children
in the first year of life. This rate is defined as the number of children under
one year of age per 1,000 live births in the reference period on average.
D
IMR = 0  1000
B

Where:

IMR: Infant mortality rate;
D0: 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.
D
U5MR = 5 0  1000
B

Where:
U5MR: Under five mortality rate;
5D0: 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:
NIR = B - D × 1000

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