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MATERNAL EDUCATIONAL ATTAINMENT AND SEX RATIO AT BIRTH BY RACE IN THE UNITED STATES, 2007–2015

Published online by Cambridge University Press:  15 May 2018

Victor Grech
Victor Grech*
Affiliation:
Paediatric Department, University of Malta Medical School, Msida, Malta
*
1Email: [email protected]
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Summary

Many factors influence the male:female birth ratio (number of male births divided by total births, M/T). Studies have suggested that this ratio may be positively correlated with the education levels of mothers. This study assessed the effect of maternal education on M/T in the US population overall and by racial group. Number of live births by sex of the child, maternal educational level reached and race were obtained from the Centres for Disease Control (CDC Wonder) for the period 2007–2015. The total study sample comprised 28,268,183 live births. Overall, for the four available recorded racial groups (Asian/Pacific Islander, White, American Indian/Alaska Native and Black/African American), M/T rose significantly with increasing education levels (p<0.0001). When analysed by race, this relationship was only found for White births (p<0.0001). The M/T of Black births rose with increasing maternal education level up to associate degree level (p=ns), then fell significantly with higher levels of education (χ2=4.5, p=0.03). No significant trends were present for Asian/Pacific Islander or American Indian/Alaska Native births. Socioeconomic indicators are generally indicators of better condition and in this study educational attainment was overall found to be positively correlated with M/T, supporting the Trivers–Willard hypothesis.

Type
Research Article
Information
Journal of Biosocial Science , Volume 51 , Issue 3 , May 2019 , pp. 457 - 462
Copyright
© Cambridge University Press, 2018 

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References

Almond, D. & Edlund, L. (2007) Trivers–Willard at birth and one year: evidence from US natality data 1983–2001. Proceedings of the Royal Society B: Biological Sciences 274, 2491–2496.Google Scholar
Chacon‐Puignau, G. C. & Jaffe, K. (1996) Sex ratio at birth deviations in modern Venezuela: the Trivers‐Willard effect. Social Biology 43, 257–270.Google Scholar
Ciocco, A. (1938) Variation in the sex ratio at birth in the United States. Human Biology 10, 36–64.Google Scholar
Fleiss, J. (1981) Statistical Methods for Rates and Proportions, 2nd edition. John Wiley and Sons, New York, pp. 14–15.Google Scholar
Grech, V. (2017) Evidence of socio-economic stress and female foeticide in racial disparities in the gender ratio at birth in the United States (1995–2014). Early Human Development 106–107, 63–65.Google Scholar
Grech, V. (2018) A socio-economic hypothesis for lower birth sex ratios at racial, national and global levels. Early Human Development 116, 81–83.Google Scholar
James, W. H. (1987) The human sex ratio. Part 1: A review of the literature. Human Biology 59, 721–752.Google Scholar
James, W. H. & Grech, V. (2017) A review of the established and suspected causes of variations in human sex ratio at birth. Early Human Development 109, 50–56.Google Scholar
Oliver, M. L. & Shapiro, T. M. (2006) Black Wealth, White Wealth: A New Perspective on Racial Inequality. Taylor & Francis, New York.Google Scholar
Pavic, D. (2015) Secular trends and geographical variations in sex ratio at birth. Early Human Development 91, 811–815.Google Scholar
Russell, W. (1936) Statistical study of the sex ratio at birth. Journal of Hygiene 36, 381–401.10.1017/S0022172400043722Google Scholar
Ryan, C. L. & Bauman, K. (2016) Educational Attainment in the United States: 2015. Population Characteristics. US Census Bureau report P20–578.Google Scholar
Sewell, W. H. & Shah, V. P. (1967) Socioeconomic status, intelligence, and the attainment of higher education. Sociology of Education 40, 1–23.10.2307/2112184Google Scholar
Slezák, P., Bokes, P., Námer, P. & Waczulíková, I. (2014) Microsoft Excel add-in for the statistical analysis of contingency tables. International Journal for Innovation Education and Research 2, 90–100.Google Scholar
Teitelbaum, M. S. & Mantel, N. (1971) Socio-economic factors and the sex ratio at birth. Journal of Biosocial Science 3, 23–42.Google Scholar
Trivers, R. L. & Willard, D. E. (1973) Natural selection of parental ability to vary the sex ratio of offspring. Science 179, 90–92.Google Scholar
Visaria, P. M. (1967) Sex ratio at birth in territories with a relatively complete registration. Biodemography and Social Biology 14, 132–142.Google Scholar
Winston, S. (1931) The influence of social factors upon the sex-ratio at birth. American Journal of Sociology 37, 1–21.Google Scholar