The Demopædia Encyclopedia on Population is under heavy modernization and maintenance. Outputs could look bizarre, sorry for the temporary inconvenience

Multilingual Demographic Dictionary, second unified edition, English volume

Difference between revisions of "Ageing"

Multilingual Demographic Dictionary, second unified edition, English vol.
Jump to: navigation, search
(Eugen Grebenik et al., first edition 1958)
 
(Eugen Grebenik et al., first edition 1958)
 
Line 102: Line 102:
  
 
<noinclude>
 
<noinclude>
[[en-I:ageing]] [[ar-I:تقدم في العمر (عمر)]] [[de-I:Altern]] [[es-I:envejecimiento de la población]] [[fi-I:vanhentuminen]] [[fr-I:vieillissement]] [[it-I:invecchiamento]] [[pl-I:demograficzne starzenie się]] [[pt-I:ENVELHECIMENTO]] [[ru-I:Старение населения]]  
+
[[en-I:ageing]] [[ar-I:تهريم (هرم)]] [[de-I:altern]] [[es-I:envejecer]] [[fi-I:vanhentaminen]] [[fr-I:vieillir]] [[it-I:invecchiare]] [[pl-I:postarzanie]] [[pt-I:ENVELHECIMENTO]] [[ru-I:Передвижка возрастов]]  
 
</noinclude>
 
</noinclude>
 
<noinclude>
 
<noinclude>

Latest revision as of 21:07, 7 November 2009

Ageing  (AGEING)


The mean age 1 of a population is the average age of all its members, the median age 2 is the age which divides the population into two numerically equal groups. When the proportion of old people in a population increases, we speak of the aging 3 of the population. An increase in the proportion of young people involves a rejuvenation 4 of the population. An old population 5 has a high proportion of old people, a young population 6 has a high proportion of young people or children. The term aging used above should not be confused with the technique used in population projection, which consists of aging 7 a population by applying survival probabilities (431-6) by age to determine the number of survivors at a later date.

  • 3. Also written ageing.
  • 4. The word younging is used by American demographers.

More...