Compare methods

	Dependency Ratio	Population Pyramid Analysis
Field	Demography	Demography
Family	Process / pipeline	Process / pipeline
Year of origin	1956	1874
Originator	Standard demographic practice (United Nations / national statistical offices)	Francis A. Walker (early age-sex diagrams); standard demographic practice
Type	Ratio summarizing the age structure of economic dependency	Graphical and tabular analysis of population age-sex structure
Seminal source	Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512	Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512
Aliases	Age dependency ratio, Youth and old-age dependency ratio, Total dependency ratio, Bağımlılık Oranı	Age-sex pyramid, Population age structure diagram, Age structure analysis, Nüfus Piramidi Analizi
Related	4	4
Summary	The age dependency ratio is a simple summary measure of a population's age structure that expresses the number of people in 'dependent' age groups — children and the elderly — relative to those of working age, conventionally per 100 working-age persons. It is split into a youth dependency ratio and an old-age dependency ratio, and it is among the most widely used demographic indicators of the potential economic burden an age structure places on its productive population.	Population pyramid analysis is the description and interpretation of a population's age-sex structure through a back-to-back horizontal bar chart, with males on one side, females on the other, and age groups stacked from youngest at the bottom to oldest at the top. The shape of the pyramid encodes a population's fertility, mortality, and migration history and is the demographer's first diagnostic of whether a population is young and growing, ageing, or contracting.