Page 56 - niengiam2021

O: Number of out-migrants in the reference period;

P: Population up to the reference time-point.

Net-migration rate reflects the status of in-migration and out-
migration of population into/out from a territorial unit in the reference
period. It is the difference between number of in-migrants and number
of out-migrants of a territorial unit on average per 1000 population of

that territorial unit.
I  O
NR   1000
P

Where:
NR: Net-migration rate;

I: Number of in-migrants in the reference period;
O: Number of out-migrants in the reference period;
P: Population up to the reference time-point.

Or: NR = IR - OR

Where:

NR: Net-migration rate;

IR: In-migration rate;

OR: Out-migration rate.

Data on In-migration rate, Out-migration rate and Net-migration
rate of the whole Country, 06 socio-economic regions and 63
provinces/cities under the Central is only calculated for internal

migration (not including international migration).

Life expectancy at birth reflects the prospect of a newborn
could live for how many years if the current mortality model is
maintained, this is the key statistical indicator of the Life table.

T
e  0
0
l 0

56