Birth rate 515898 221873259 2008-06-26T13:47:31Z 141.211.33.224 /* Socio-economic factors */ {{template:sources|date=March 2008}} [[Image:World net birth rate 2007.png|thumb|220px|World net birth rate 2007]] [[Image:Europe net birth rate 2007.png|thumb|170px|Europe net birth rate 2007]] Crude '''birth rate''' is the natality or [[childbirth]]s per 1,000 people per year.<ref>See "[[Fertility rates]]"; Economic Geography Glossary at University of Washington</ref> It can be represented by <math>CBR = \frac{n}{p}{1000}</math> where n is the number of childbirths in that year, and p is the current [[population]]. This figure is combined with the [[crude death rate]] to produce the rate of natural [[population growth]] (natural in that it does not take into account net migration). [[As of 2007]], the average birth rate for the whole world is 20.3 per year per 1000 total population, which for a [[world population]] of 6.6 billion comes to 134 million babies per year. Another indicator of fertility is frequently used: the [[total fertility rate]] — average number of children born to each woman over the course of her life. In general, the total fertility rate is a better indicator of (current) fertility rates because unlike the crude birth rate it is not affected by the age distribution of the population. Fertility rates tend to be higher in less economically developed countries and lower in more economically developed countries. ==Other methods of measuring birth rate== [[Image:Birthratechart.png|thumb|321 px|right|'''Total number of births in the United States, 1934 to present''']] * Total number of births General fertility rate (GFR) – This measures the number of births per 1,000 women aged 15 to 44 or 15 to 49. * Standardised birth rate (SBR) – This compares the age-sex structure to a hypothetical standard population. * [[Total fertility rate]] (TFR) – The mean number of children a woman is expected to bear during her child-bearing years. It is also independent of the age-sex structure of the population. ==Factors affecting birth rate== {{template:original research|date=March 2008}} *[[Natalism|Pro-natalist]] policies and [[Antinatalism|Antinatalist]] policies from government *Abortion rates *Existing age-sex structure *Social and religious beliefs - especially in relation to contraception *Female literacy levels *Economic prosperity (although in theory when the economy is doing well families can afford to have more children in practice the higher the economic prosperity the lower the birth rate). *Poverty levels – children can be seen as an economic resource in developing countries as [[child labour|they can earn money]]. *Infant Mortality Rate – a family may have more children if a country's IMR is high as it is likely some of those children will die. *Urbanization *Typical age of marriage *Pension availability *Conflict == See also == * [[Death rate]] * [[List of countries by birth rate]] * [[Population ageing]] * [[Total fertility rate]] ==References== {{reflist}} == External links == * [https://www.cia.gov/library/publications/the-world-factbook/fields/2054.html CIA World Factbook Birth Rate List by Rank] [[Category:Population]] [[Category:Population ecology]] [[Category:Demography]] {{ecology-stub}} [[ast:Natalidá]] [[bg:Раждаемост]] [[ca:Taxa de natalitat]] [[cs:Porodnost]] [[da:Fødselsrate]] [[de:Geburtenziffer]] [[es:Tasa bruta de natalidad]] [[fr:Taux de natalité]] [[hr:Natalitet]] [[id:Tingkat kelahiran]] [[it:Tasso di natalità]] [[nl:Geboortecijfer]] [[ja:出生率]] [[no:Fødselsrate]] [[pl:Współczynnik urodzeń]] [[pt:Taxa de natalidade]] [[ro:Natalitate]] [[ru:Рождаемость]] [[sk:Pôrodnosť]] [[sr:Наталитет]] [[sh:Natalitet]] [[sv:Nativitet]] [[zh:出生率]]