Document Detail

Male Scarcity is Associated with Higher Prevalence of Premature Gestation and Low Birth Weight Births Across the United States.
MedLine Citation:
PMID:  23386438     Owner:  NLM     Status:  Publisher    
OBJECTIVES: Modern adverse birth outcomes may partially result from mechanisms evolved to evaluate environmental conditions and regulate maternal investment trade-offs. Male scarcity in a population is associated with a cluster of characteristics related to higher mating effort and lower paternal investment. We predicted that modern populations with male scarcity would have shorter gestational times and lower birth weights on average. METHODS: We compared US Centers for Disease Control and Prevention county-aggregated year 2000 birth records with US Decennial Census data. We combined these data in a path model with the degree of male scarcity and known socio-economic predictors of birth outcomes as exogenous predictors of prematurity and low birth weight, with single mother households as a proportion of families with children as a mediator (N = 450). RESULTS: Male scarcity was directly associated with higher rates of low birth weight. Male scarcity made significant indirect predictions of rates of prematurity and low birth weight, as mediated by the proportion of families headed by single mothers. Aggregate socio-economic status also indirectly predicted birth outcomes, as mediated by the proportion of families headed by single mothers, whereas the proportion African American retained both direct and indirect predictions of adverse birth outcomes. CONCLUSIONS: Male scarcity influences life history tradeoffs, with consequences for important social and public health issues such as adverse birth outcomes. Am. J. Hum. Biol., 2013. © 2013 Wiley Periodicals, Inc.
Daniel J Kruger; Jillian Clark; Sarah Vanas
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-5
Journal Detail:
Title:  American journal of human biology : the official journal of the Human Biology Council     Volume:  -     ISSN:  1520-6300     ISO Abbreviation:  Am. J. Hum. Biol.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8915029     Medline TA:  Am J Hum Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Wiley Periodicals, Inc.
Population Studies Center and School of Public Health, University of Michigan, Ann Arbor, Michigan, 48109.
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