Page 60 - niengiam2022

B i: Number of live births in the reference period of women in the age

group (i);
th
i: i age group;
th
W i: Number of women of the i age group up to the reference time-point.
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
Crude death rate indicates that for every 1000 people, how many
deaths are in the reference period.

Formula:

D
CDR (‰) = × 1000
P tb

Where:

CDR: Crude death rate;

D: Total of deaths in the reference period;

P tb: 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;

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.

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