Page 48 - NGTK2018
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per 1000 live births in the reference period on average.
                                                          D 0
                                                                  × 1000
                                               IMR =
                                                           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.

                                                           5D 0
                                             U5MR  =               × 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 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.
                                                  B - D
                                       NIR  =              × 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


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