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RECENT TRENDS IN GENDER RATIO AT BIRTH IN HANGZHOU, CHINA.

L Tang1, L Q Qiu2, Kkw Yau3

  • 1Department of Management Sciences, City University of Hong Kong, Kowloon, Hong Kong; School of Public Health, Curtin University, Perth, WA, Australia.

Tap Chi Y Te Cong Cong
|August 23, 2016
PubMed
Summary

The sex ratio at birth in Hangzhou, China, remained unbalanced between 2005 and 2014. Despite fluctuations, the male-to-female birth ratio consistently exceeded normal levels, indicating a persistent demographic imbalance.

Keywords:
ChinaHangzhouSex ratiobirthsgender equality

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Area of Science:

  • Demography
  • Public Health
  • Reproductive Health

Background:

  • China has reported elevated sex ratios at birth since the early 1980s.
  • Understanding recent trends in sex ratio at birth is crucial for public health.
  • Hangzhou, Zhejiang Province, provides a specific regional focus for this demographic analysis.

Purpose of the Study:

  • To investigate recent trends in the sex ratio at birth in Hangzhou.
  • To analyze demographic data related to birth sex ratios over a defined period.

Main Methods:

  • Utilized the Hangzhou Birth Information Database for live births between 2005 and 2014.
  • Excluded infants with missing gender data or ambiguous genitalia for accurate ratio calculation.
  • Calculated sex ratios at birth based on maternal and birth characteristics.

Main Results:

  • An overall sex ratio of 111.0 (478,192 males to 430,852 females) was recorded.
  • The ratio remained stable around 110.7 from 2005-2008, peaked at 113.1 in 2010, and declined to 109.6 by 2014.
  • These figures indicate a persistent imbalance favoring male births throughout the study period.

Conclusions:

  • The sex ratio at birth in Hangzhou has remained unbalanced over the past decade.
  • This sustained imbalance highlights ongoing demographic challenges in the region.
  • Further research may be needed to explore the underlying causes and implications of these findings.