Demographic aspects of lactation and postpartum amenorrhea
TLDR
On an average, breastfeeding delayed the resumption of menstruation by about 7 months, and the association between lactation and amenorrhea is not accounted for by differences in mother’s age, parity, education and her place of residence.Abstract:
Interrelations between lactation and post-partum amenorrhea are studied from the reports of about 5,000 married women included in a 1966 Follow-up Survey of Acceptors of an Intrauterine Device (IUD) in Taiwan. The length of post-partum amenorrhea and of breastfeeding are positively associated. On an average, breastfeeding delayed the resumption of menstruation by about 7 months. The association between lactation and amenorrhea is not accounted for by differences in mother’s age, parity, education and her place of residence. A multiple regression analysis suggests that (1) age affects amenorrhea both directly and through lactation, (2) parity has no independent effect on either lactation or amenorrhea, and (3) education and place of residence affect amenorrhea mainly through the cultural variations in the practice of breastfeeding.read more
Citations
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Does malnutrition affect fecundity? A summary of evidence
TL;DR: Among the fecundity components examined here in noncontracepting populations, age at menarche and the duration of lactational amenorrhea appear to be the ones most affected by malnutrition.
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Life History of Yellow Baboons: Physical Development, Reproductive Parameters, and Infant Mortality
TL;DR: Data indicate that female baboons in Amboseli are older at birth of first infant, and have, on the average, a somewhat shorter interbirth interval than was estimated from earlier crossectional field data, and therefore spend a larger portion of their adult life pregnant, but have a much longer interval between the birth of an infant and theBirth of that infant’s next older surviving sibling.
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Prospective study of birth interval dynamics in rural Bangladesh.
TL;DR: A group of 209 married, fecund women in rural Bangladesh were studied prospectively for 24 months from 1969 to 1971 to define some of the biological and sociological factors relating to fertility performance.
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Primate infant's effects on mother's future reproduction
TL;DR: Female savanna baboons (Papio cynocephalus) had a longer postpartum amenorrhea and thereafter cycled longer before conceiving if their previous infant survived than if that infant died.
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Demography, ranging patterns, and activity budgets of black spider monkeys (Ateles paniscus chamek) in the Manu National Park, Peru.
TL;DR: Demography, ranging patterns, and activity budgets provide insight into some of the proximate determinants of fission‐fusion social organization in this species and illustrate the different strategies used by males and females to gain access to critical resources.
References
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Book
The American occupational structure
Peter M. Blau,Otis Dudley Duncan +1 more
TL;DR: The American Occupational Structure is renowned for its pioneering methods of statistical analysis as well as for its far-reaching conclusions about social stratification and occupational mobility in the United States.
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The American Occupational Structure.
Journal ArticleDOI
Some data on natural fertility.
TL;DR: Data on the natural fertility (complete absence of birth control) of 13 populations are examined with the study restricted to legitimate birthrates and those of unmarried women in a stable union finding very different fertility levels.
Book
Family Planning in Taiwan: An Experiment in Social Change
TL;DR: The experimental family planning program begun in 1963 in Taichung, the provincial capital of Taiwan, was the largest intensive program of its kind ever to be carried out for a sizable concentrated population as discussed by the authors.