title: Under 5 mortality rate and its contributors in Zhejiang Province of China from 2000 to 2009.
abstract: OBJECTIVE
  By analyzing the under 5 mortality rate (U5MR) and its contributors in Zhejiang Province of China from 2000 to 2009, we tried to understand the trend of U5MR change in Zhejiang Province and thus propose strategies to reduce child mortality.
  
  
  METHODS
  Thirty cities/counties/districts from Zhejiang Province were selected using stratified cluster sampling approach. Children under five years in these areas were enrolled as the subjects. The U5MR and its contributors were analyzed in terms of age, migration status of mothers, and other indicators using classic descriptive methods and Chi square test.
  
  
  RESULTS
  The U5MR in Zhejiang Province showed a declining trend from 14.83‰ in 2000 to 9.49‰ in 2009. In 2009, the U5MR was significantly higher in the rural areas than in the urban areas (9.14‰ vs.6.50‰, P<0.01) and among floating populations than among local residents (12.12‰ vs. 6.42‰, P<0.01). Preterm birth/low birth weight was the leading cause of U5MR in 2009. More specifically, preterm birth/low birth weight, congenital heart disease, and birth asphyxia were the top three causes of deaths among infants (<1 year), while drowning, traffic accidents, and accidental falls were the leading causes of deaths among children (1-4 years).
  
  
  CONCLUSIONS
  The U5MR in Zhejiang Province in 2009 differed between urban areas and rural areas and between floating populations and local residents. The main causes of death differ between infants and young children. Prevention of preterm birth/low birth weight and congenital anomalies will reduce infant death, while the main intervention for young children is to avoid accidental injuries.
authors.affiliation: Department of Genetic and Metabolism, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China.
authors.forename: Yan-Hua
authors.initials: YH
authors.lastname: Xu
authors.affiliation: Department of Genetic and Metabolism, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China.
authors.forename: Xin-Wen
authors.initials: XW
authors.lastname: Huang
authors.affiliation: Department of Genetic and Metabolism, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China.
authors.forename: Ru-Lai
authors.initials: RL
authors.lastname: Yang
keywords: Mortality rate; cause of death; children
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