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 Crude birth rate (‰)
Characteristic Description
Name Crude birth rate (‰) by Place of residence (NUTS - 2013); Annual
Regularity Annual
Source Statistics Portugal, Demographic indicators
First available period 2011
Last available period 2016
  • Data reference period
  • Place of residence (NUTS - 2013)
  • AVERAGE POPULATION:  The average population during a calendar year, generally calculated as the arithmetic mean of the population on two consecutive years.
  • REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.
  • CRUDE BIRTH RATE:  The ratio of the number of births during the year to the average population in that year. The value is expressed per 1000 inhabitants.
Formule CBR=[LB(t-1, t)/[P(t)+P(t-1)]/2]*10^n;

P(t)=Population at moment t;
P(t-1)=Population at moment (t-1);
LB(t-1,t)=Live births between the moments (t-1) e t;
n = 2 ou 3.
Measure unit (symbol) Permillage (‰)
Power of 10  0
Last update date 04/08/2017

information presented in 23/3/2018