Acta Med. 2012, 55: 138-141

https://doi.org/10.14712/18059694.2015.52

Secular Trends and Latitude Gradients in Sex Ratios at Birth in Czechoslovakia and the Post-Czechoslovakian States

Victor Grech

Department of Paediatrics, Mater Dei Hospital, Malta

Received May 23, 2012
Accepted September 9, 2012

References

1. Arena JFP, Smith DW (1978). Sex liability to single structural defects. Am J Dis Child 132: 970–972.
2. Byrne J, Warburton D (1987). Male excess among anatomically normal fetuses in spontaneous abortions. American Journal of Medical Genetics 26, 605–11. <https://doi.org/10.1002/ajmg.1320260315>
3. Catalano RA (2003). Sex ratios in the two Germanies: a test of the economic stress hypothesis. Human Reproduction 18, 1972–5. <https://doi.org/10.1093/humrep/deg370>
4. Central Intelligence Agency (1997–2010). CIA World Factbook. Washington, DC: Central Intelligence Agency.
5. Chahnazarian A (1988). Determinants of the sex ratio at birth: Review of recent literature. Soc Biol 35: 214–235.
6. Fellman J, Eriksson AW (2011). Temporal trends in the secondary sex ratio in Nordic countries. Biodemography and Social Biology 57, 143–54. <https://doi.org/10.1080/19485565.2011.614193>
7. Fellman J, Eriksson AW , Forsius H (2002). Sex ratio and proportion of affected sons in sibships with X-chromosomal recessive traits: maximum likelihood estimation in truncated multinomial distributions. Human Heredity 53:173–80. <https://doi.org/10.1159/000066191>
8. Fleiss JL (1981). Statistical methods for rates and proportions. New York: John Wiley and Sons, 1981: 14–15 (2nd edition).
9. Fukuda M, Fukuda K, Shimizu T, Møller H (1998). Decline in sex ratio at birth after Kobe earthquake. Human Reproduction 13, 2321–2. <https://doi.org/10.1093/humrep/13.8.2321>
10. Grech V, Vassallo-Agius P, Savona-Ventura C (2000). Declining male births with increasing geographical latitude in Europe. Journal of Epidemiology and Community Health 54, 244–246. <https://doi.org/10.1136/jech.54.4.244> <PubMed>
11. Grech V, Vassallo-Agius P, Savona-Ventura C (2002). Unexplained differences in the sex ratio at birth in Europe and North America. British Medical Journal 324, 1010–1011. <https://doi.org/10.1136/bmj.324.7344.1010> <PubMed>
12. Grech V, Vassallo-Agius P, Savona-Ventura C (2003). Secular trends in sex ratios at birth in North America and Europe over the second half of the 20th century. Journal of Epidemiology and Community Health 57, 612–5. <https://doi.org/10.1136/jech.57.8.612> <PubMed>
13. James WH (1987). The human sex ratio. Part 1: A review of the literature. Human Biology 59, 721–52.
14. James WH (1995). What stabilizes the sex ratio? Annals of Human Genetics 59 (Pt 2), 243–249. <https://doi.org/10.1111/j.1469-1809.1995.tb00744.x>
15. James WH (2008). Evidence that mammalian sex ratios at birth are partially controlled by parental hormone levels around the time of conception. Journal of Endocrinology 198, 3–15. <https://doi.org/10.1677/JOE-07-0446>
16. Lyster WR (1974). Altered sex ratio after the London smog of 1952 and the Brisbane flood of 1965. Journal of Obstetrics and Gynaecology of the British Commonwealth 81, 626–31. <https://doi.org/10.1111/j.1471-0528.1974.tb00529.x>
17. Teitelbaum, MS (1972). Factors associated with the sex ratio in human populations. In The structure of human populations, ed. G. A. Harrison and A. J. Boye, 90–109. Oxford: Clarendon Press.
18. Visaria PM (1967). Sex ratio at birth in territories with a relatively complete registration. Eugen Q 14: 132–142. <https://doi.org/10.1080/19485565.1967.9987713>
19. Zorn B, Sucur V, Stare J, Meden-Vrtovec H (2002). Decline in sex ratio at birth after 10-day war in Slovenia: brief communication. Human Reproduction. 17, 3173–7. <https://doi.org/10.1093/humrep/17.12.3173>
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