title: RECENT TRENDS IN GENDER RATIO AT BIRTH IN HANGZHOU, CHINA.
abstract: BACKGROUND
  Higher than normal sex ratios at birth in China have been reported since the early 1980's. This study aimed to investigate recent trends in sex ratio at birth in Hangzhou, capital of Zhejiang Province in southeast China.
  
  
  METHODS
  Information on selected maternal and birth-related characteristics was extracted from the Hangzhou Birth Information Database for all pregnant women who delivered live births during 2005-2014. The sex ratios at birth were calculated after excluding infants with missing data on gender and those born with ambiguous genitalia.
  
  
  RESULTS
  A total of 478,192 male births and 430,852 female births were recorded giving an overall ratio of 111.0. The sex ratio at birth was almost constant at around 110.7 during the period 2005-2008, followed by an increase to the peak at 113.1 in 2010 and then declined back to 109.6 in 2014.
  
  
  CONCLUSIONS
  The gender ratio at birth in Hangzhou remained unbalanced for the past decade.
authors.affiliation: Department of Management Sciences, City University of Hong Kong, Kowloon, Hong Kong; School of Public Health, Curtin University, Perth, WA, Australia.
authors.forename: L
authors.initials: L
authors.lastname: Tang
authors.affiliation: Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: L Q
authors.initials: LQ
authors.lastname: Qiu
authors.affiliation: School of Public Health, Curtin University, Perth, WA, Australia.
authors.forename: Kkw
authors.initials: K
authors.lastname: Yau
authors.affiliation: Hang Seng Management College, New Territories, Hong Kong.
authors.forename: Y V
authors.initials: YV
authors.lastname: Hui
authors.affiliation: School of Public Health, Curtin University, Perth, WA, Australia.
authors.forename: C W
authors.initials: CW
authors.lastname: Binns
authors.affiliation: School of Public Health, Curtin University, Perth, WA, Australia.
authors.forename: A H
authors.initials: AH
authors.lastname: Lee
keywords: China; Hangzhou; Sex ratio; births; gender equality