Authors: Hai Yan Hou Dan Wang Xiao Ping Zou Zhen Hua Yang TinChiu Li Ya Qiong Chen
Publish Date: 2013/07/18
Volume: 289, Issue: 2, Pages: 285-291
Abstract
A retrospective case–control study was conducted 959 fetal losses and 959 normal intrauterine pregnancies within 14 weeks of pregnancy in 15 general or obstetrics and gynecology hospitals were selected into case and control groups respectively Data based on hospital records and national pollution monitor station records were collected Logistic regression model was conducted to examine the associations between 4 ambient air pollutants SO2 PM10 NO2 and TSP exposures and fetal lossThe ratio of fetal loss to termination of pregnancy for heating months 228 was significantly P 0001 higher than that for the nonheating months 177 Logistic regression suggested that fetal loss within 14 weeks was associated with higher exposure to SO2 OR = 1976 95 CI 234–16671 and TSP OR = 204 95 CI 101–413 in the first month of pregnancyThe study was supported by Tianjin Science Council No 07JCZDJC07400 The authors acknowledge the help from the 15 Hospitals of Tianjin We especially thank Dr Jun Wu from the California University of USA and the researchers in the Epidemiology Division of the Hospital of Chinese People’s Armed Police Forces for help of study design and data analysis
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