பிறப்பு வீதம்: திருத்தங்களுக்கு இடையிலான வேறுபாடு
"Birth rate" பக்கத்தை மொழிபெயர்த்ததன் மூலம் உருவாக்கப்பட்டது |
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12:25, 9 சனவரி 2016 இல் நிலவும் திருத்தம்
The birth rate (technically, births/population rate) is the total number of live births per 1,000 of a population in a year.[1] The rate of births in a population is calculated in several ways: live births from a universal registration system for births, deaths, and marriages; population counts from a census, and estimation through specialized demographic techniques. The birth rate (along with mortality and migration rate) are used to calculate population growth.
The crude birth rate is the number of live births per 1,000 people per year.[2] Another term used interchangeably with birth rate is natality.[3] When the crude death rate is subtracted from the crude birth rate, the result is the rate of natural increase (RNI).[4] This is equal to the rate of population change (excluding migration).[4]
The total (crude) birth rate (which includes all births)—typically indicated as births per 1,000 population—is distinguished from an age-specific rate (the number of births per 1,000 persons in an age group).[5] The first known use of the term "birth rate" in English occurred in 1859.[6]
Notes
- ↑ "World Birth rate – Demographics". Indexmundi.com. பார்க்கப்பட்ட நாள் 17 October 2011.
- ↑ See "Fertility rates"; Economic Geography Glossary at University of Washington
- ↑ "birthrate – definition of birthrate by the Free Online Dictionary, Thesaurus and Encyclopedia". Thefreedictionary.com. பார்க்கப்பட்ட நாள் 17 October 2011.
- ↑ 4.0 4.1 "Birth rate, crude (per 1,000 people) | Data | Table". Data.worldbank.org. பார்க்கப்பட்ட நாள் 17 October 2011.
- ↑ "birthrate: Definition from". Answers.com. பார்க்கப்பட்ட நாள் 17 October 2011.
- ↑ "Birthrate – Definition and More from the Free Merriam-Webster Dictionary". Merriam-webster.com. பார்க்கப்பட்ட நாள் 17 October 2011.