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| Dependency Ratio× | Mean Age at Childbearing× | |
|---|---|---|
| Field | Demography | Demography |
| Family | Process / pipeline | Process / pipeline |
| Year of origin≠ | 1956 | 1968 |
| Originator≠ | Standard demographic practice (United Nations / national statistical offices) | Standard demographic practice (fertility schedule moments) |
| Type≠ | Ratio summarizing the age structure of economic dependency | Summary location measure of the age pattern of fertility |
| 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 | MAC, Mean age of the fertility schedule, Mean age of mothers at birth, Ortalama Doğurganlık Yaşı |
| 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. | The mean age at childbearing is the average age of mothers at the birth of their children, computed as the fertility-rate-weighted mean of maternal age over the age-specific fertility schedule. As the first moment of the fertility curve, it summarizes the tempo — the timing — of childbearing in a single number, complementing the total fertility rate, which measures quantum, or how many children are born. |
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