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birth
(redirected from birth interval)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia 0.13 sec.

birth

Act of producing live young from within the body of female animals. Both viviparous and ovoviviparous animals give birth to young. In viviparous animals, embryos obtain nourishment from the mother via a placenta or other means.

In ovoviviparous animals, fertilized eggs develop and hatch in the oviduct of the mother and gain little or no nourishment from maternal tissues. See also pregnancy.


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? Mentioned in ? References in periodicals archive
 
The former criterion (married years minus well years [less than equal to] 2) was chosen to account for the median first birth interval in Bangladesh, which is between 24 and 36 months (Shaikh 2006).
Indeed, empirical evidences from other settings including Korea, Malaysia, Taiwan and China (Rindfuss and Morgan 1983; Wu 1996; Wu and Martinson 1993) suggest that the increase in participation in spouse selection and age at marriage may actually increase coital frequency, leading to a shorter first birth interval.
Long birth intervals combined with early stopping led to lower overall marital fertility (around 6 births per married woman).
 
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