Mean age at birth: Difference between revisions
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===For all births=== | ===For all births=== | ||
The '''mean age | The '''mean age at birth''' ('''MAB''') or '''mean age of childbearing''' ('''MAC''') in a given [[population]] over a given time interval is the [[arithmetic mean]] of the ages of mothers giving [[live birth]]s at the time of the live birth, for all live births that occur within that time interval. | ||
===For births at a given birth order=== | ===For births at a given birth order=== | ||
Suppose <math>i</math> is a positive integer. The mean age of <math>i^{th}</math> childbearing, denoted <math>MAC_i</math>, for a given population in a given time interval is the [[arithmetic mean]] of the ages of mothers giving [[live birth]]s at the time of the live birth, for all live births that occur within the time interval at [[defining ingredient::birth order]] <math>i</math>. | Suppose <math>i</math> is a positive integer. The mean age of <math>i^{th}</math> childbearing, denoted <math>MAC_i</math>, for a given population in a given time interval is the [[arithmetic mean]] of the ages of mothers giving [[live birth]]s at the time of the live birth, for all live births that occur within the time interval at [[defining ingredient::birth order]] <math>i</math>. | ||
==Related cohort notion== | |||
For the corresponding cohort fertility notion, see [[cohort mean age at birth]]. | |||
Latest revision as of 19:16, 3 March 2014
Definition
For all births
The mean age at birth (MAB) or mean age of childbearing (MAC) in a given population over a given time interval is the arithmetic mean of the ages of mothers giving live births at the time of the live birth, for all live births that occur within that time interval.
For births at a given birth order
Suppose is a positive integer. The mean age of childbearing, denoted , for a given population in a given time interval is the arithmetic mean of the ages of mothers giving live births at the time of the live birth, for all live births that occur within the time interval at birth order .
Related cohort notion
For the corresponding cohort fertility notion, see cohort mean age at birth.