手法を比較

	Mean Age at Childbearing	Population Pyramid Analysis
分野	人口学	人口学
系統	Process / pipeline	Process / pipeline
提唱年	1968	1874
提唱者	Standard demographic practice (fertility schedule moments)	Francis A. Walker (early age-sex diagrams); standard demographic practice
種類	Summary location measure of the age pattern of fertility	Graphical and tabular analysis of population age-sex structure
原典	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
別名	MAC, Mean age of the fertility schedule, Mean age of mothers at birth, Ortalama Doğurganlık Yaşı	Age-sex pyramid, Population age structure diagram, Age structure analysis, Nüfus Piramidi Analizi
関連	4	4
概要	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.	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.