Page 63 - Niên giám 2021
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The coefficient of 5 in the above formula is applied for the average rate
of consecutive 5-year age groups so that the TFR will be commensurate with
the age-specific fertility rates described in this formula.
Crude death rate is one of the two components of natural population
increase. High or low value of crude death rate can affect the size, structure and
population growth rate. Crude death rate indicates that for every 1000 people,
how many deaths are in the reference period.
D
CDR = 1000
P
Where:
CDR: Crude death rate;
D: Total of deaths in the reference period;
P: 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 1000 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
U 5 MR = 5 0 1000
B
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