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  • 标题:Birth Weight following Pregnancy during the 2003 Southern California Wildfires
  • 作者:David M. Holstius ; Colleen E. Reid ; Bill M. Jesdale
  • 期刊名称:Environmental Health Perspectives
  • 印刷版ISSN:0091-6765
  • 电子版ISSN:1552-9924
  • 出版年度:2012
  • 卷号:120
  • 期号:9
  • 页码:1340-1345
  • DOI:10.1289/ehp.1104515
  • 语种:English
  • 出版社:OCR Subscription Services Inc
  • 摘要:Background: In late October 2003, a series of wildfires exposed urban populations in Southern California to elevated levels of air pollution over several weeks. Previous research suggests that short-term hospital admissions for respiratory outcomes increased specifically as a result of these fires. Objective: We assessed the impact of a wildfire event during pregnancy on birth weight among term infants. Methods: Using records for singleton term births delivered to mothers residing in California’s South Coast Air Basin (SoCAB) during 2001–2005 ( n = 886,034), we compared birth weights from pregnancies that took place entirely before or after the wildfire event ( n = 747,590) with those where wildfires occurred during the first ( n = 60,270), second ( n = 39,435), or third ( n = 38,739) trimester. The trimester-specific effects of wildfire exposure were estimated using a fixed-effects regression model with several maternal characteristics included as covariates. Results: Compared with pregnancies before and after the wildfires, mean birth weight was estimated to be 7.0 g lower [95% confidence interval (CI): –11.8, –2.2] when the wildfire occurred during the third trimester, 9.7 g lower when it occurred during the second trimester (95% CI: –14.5, –4.8), and 3.3 g lower when it occurred during the first trimester (95% CI: –7.2, 0.6). Conclusions: Pregnancy during the 2003 Southern California wildfires was associated with slightly reduced average birth weight among infants exposed in utero . The extent and increasing frequency of wildfire events may have implications for infant health and development.
  • 关键词:air pollution; birth weight; fetal growth retardation; fires; particulate matter; pregnancy outcomes
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