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GEOGRAPHIC CLUSTERING OF THE SECONDARY SEX RATIO IN JAPAN: ASSOCIATION WITH DEMOGRAPHIC ATTRIBUTES

Published online by Cambridge University Press:  28 September 2012

YOSUKE INOUE ,
MASAHIRO UMEZAKI  and
CHIHO WATANABE
YOSUKE INOUE
Affiliation:
Department of Human Ecology, Graduate School of Medicine, The University of Tokyo, Japan Japan Society for the Promotion of Science, Japan
MASAHIRO UMEZAKI
Affiliation:
Department of Human Ecology, Graduate School of Medicine, The University of Tokyo, Japan
CHIHO WATANABE
Affiliation:
Department of Human Ecology, Graduate School of Medicine, The University of Tokyo, Japan
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Summary

The secondary sex ratio (SSR) has been suggested to decrease with adverse physical and psychological environments. Previous studies have focused on reduced SSR under adverse conditions, such as war, terrorism attack and earthquake, but few studies have investigated fluctuations in SSR in moderately adverse environments. This study analysed municipality-level vital statistics records in Japan collected between 1998 and 2002 to identify high-SSR clusters and low-SSR clusters with spatial-scan statistics. In 999 runs of simulation, high- and low-SSR clusters were detected but fewer than 950 times, indicating that SSR was not geographically clustered in Japan if type I error of 5% was adopted. Explorative analyses comparing demographic attributes between high-SSR clusters and low-SSR clusters that were detected more than 500 times in 999 runs of simulation, showed that rate of spontaneous abortion, rate of artificial abortion and divorce rate were higher in low-SSR clusters, while male life expectancy, female life expectancy and total fertility rate were higher in a high-SSR cluster.

Type
Short Report
Information
Journal of Biosocial Science , Volume 45 , Issue 2 , March 2013 , pp. 279 - 284
Copyright
Copyright © Cambridge University Press 2012

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References

Alexopoulos, E. C. & Alamanos, Y. (2007) Secondary sex ratio in Greece: evidence of an influence by father's occupational exposure. Human Reproduction 22, 2999–3001.CrossRefGoogle ScholarPubMed
Booth, A. & Amato, P. (1991) Divorce and psychological stress. Journal of Health and Social Behavior 32, 396–407.CrossRefGoogle ScholarPubMed
Bulik, C. M., Holle, A. V., Gendall, K., Lie, K. K., Hoffman, E., Mo, X., Torgersen, L. & Reichborn-Kjennerud, T. (2008) Maternal eating disorders influence sex ratio at birth. Acta Obstetricia et Gynecologica Scandinavica 87, 979–981.CrossRefGoogle ScholarPubMed
Catalano, R. A. (2003) Sex ratios in the two Germanies: a test of the economic stress hypothesis. Human Reproduction 18, 1972–1975.CrossRefGoogle ScholarPubMed
Catalano, R., Bruckner, T., Marks, A. R. & Eskenazi, B. (2006) Exogenous shocks to the human sex ratio: the case of September 11, 2001 in New York City. Human Reproduction 21, 3127–3131.CrossRefGoogle 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 ScholarPubMed
Davis, D. L., Gottlieb, M. B. & Stampnitzky, J. R. (1998) Reduced ratio of male to female births in several industrial countries: a sentinel health indicator? Journal of the American Medical Association 279, 1018–1023.CrossRefGoogle ScholarPubMed
Davis, D. L., Webster, P., Stainthorpe, H., Chilton, J., Jones, L. & Doi, R. (2007) Declines in sex ratio at birth and fetal deaths in Japan, and in U.S. whites but not African Americans. Environmental Health Perspective 115, 941–946.CrossRefGoogle Scholar
Fukuda, M., Fukuda, K., Shimizu, T., Andersen, C. Y. & Byskov, A. G. (2002) Parental periconceptional smoking and male: female ratio of newborn infants. Lancet 359, 1407–1408.CrossRefGoogle ScholarPubMed
Fukuda, M., Fukuda, K., Shimizu, T. & Møller, H. (1998) Decline in sex ratio at birth after Kobe earthquake. Human Reproduction 13, 2321–2322.CrossRefGoogle ScholarPubMed
James, W. H. (2008) The variations of human sex ratio at birth with time of conception within the cycle, coital rate around the time of conception, duration of time taken to achieve conception, and duration of gestation: a synthesis. Journal of Theoretical Biology 255, 199–204.CrossRefGoogle ScholarPubMed
James, W. H. (2009) The variations of human sex ratio at birth during and after wars, and their potential explanations. Journal of Theoretical Biology 257, 116–123.CrossRefGoogle ScholarPubMed
Kulldorff, M. (1997) A spatial scan statistic. Communications in Statistics – Theory and Methods 26, 1481–1496.CrossRefGoogle Scholar
Mathews, T. J. & Hamilton, B. E. (2005) Trend analysis of the sex ratio at birth in the United States. National Vital Statistics Reports 53, 1–17.Google ScholarPubMed
Mocarelli, P., Gerthoux, P. M., Ferrari, E., Patterson, D. G., Kieszak, S. M., Brambilla, P.et al. (2000) Paternal concentrations of dioxin and sex ratio of offspring. Lancet 355, 1858–1863.CrossRefGoogle ScholarPubMed
National Statistics Centre (n.d.) Portal Site of Official Statistics of Japan. URL: http://www.e-stat.go.jp/Google Scholar
Nepomnaschy, P. A., Welch, K. B., McConnell, D. S., Low, B. S., Strassmann, B. I. & England, B. G. (2006) Cortisol levels and very early pregnancy loss in humans. Proceedings of the National Academy of Sciences of the USA 103, 3938–3942.CrossRefGoogle ScholarPubMed
Norberg, K. (2004) Partnership status and the human sex ratio at birth. Proceedings of the Royal Society B: Biological Sciences 271, 2403–2410.CrossRefGoogle ScholarPubMed
Obel, C., Henriksen, T. B., Secher, N. J., Eskenazi, B. & Hedegaard, M. (2007) Psychological distress during early gestation and offspring sex ratio. Human Reproduction 22, 3009–3012.CrossRefGoogle ScholarPubMed
Rondó, P. H. C., Ferreira, R. F., Nogueira, F., Ribeiro, M. C. N., Lobert, H. & Artes, R. (2003) Maternal psychological stress and distress as predictors of low birth weight, prematurity and intrauterine growth retardation. European Journal of Clinical Nutrition 57, 266–272.CrossRefGoogle ScholarPubMed
Ruckstuhl, K. E., Colijn, G. P., Amiot, V. & Vinish, E. (2010) Mother's occupation and sex ratio at birth. BMC Public Health 10, 269.CrossRefGoogle ScholarPubMed
United Nations Statistics Division (n.d.) Live Births by Age of Mother and Sex of Child, General and Age-Specific Fertility Rates. Demographic and Social Statistics. URL: http://unstats.un.org/unsd/demographic/products/dyb/dyb2008.htmGoogle Scholar
Yang, M., Lee, C., Chang, S., Chung, T., Tsai, E., Ko, A. M. & Ko, Y. (2008) The effect of maternal betel quid exposure during pregnancy on adverse birth outcomes among aborigines in Taiwan. Drug and Alcohol Dependence 95, 134–139.CrossRefGoogle ScholarPubMed
Zorn, B., Stare, V. & Meden-Vrtovec, H. (2002) Decline in sex ratio at birth after 10-day war in Slovenia: brief communication. Human Reproduction 17, 3173–3177.CrossRefGoogle ScholarPubMed