Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea.

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  • Author(s): Son JY;Son JY; Bell ML; Lee JT
  • Source:
    Environmental health perspectives [Environ Health Perspect] 2011 May; Vol. 119 (5), pp. 725-30. Date of Electronic Publication: 2010 Dec 17.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: National Institute of Environmental Health Sciences Country of Publication: United States NLM ID: 0330411 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1552-9924 (Electronic) Linking ISSN: 00916765 NLM ISO Abbreviation: Environ. Health Perspect. Subsets: MEDLINE
    • Publication Information:
      Original Publication: Research Triangle Park, N. C. National Institute of Environmental Health Sciences.
    • Subject Terms:
    • Abstract:
      Background: Several studies suggest that airborne particulate matter (PM) is associated with infant mortality; however, most focused on short-term exposure to larger particles.
      Objectives: We evaluated associations between long-term exposure to different sizes of particles [total suspended particles (TSP), PM ≤ 10 μm in aerodynamic diameter (PM₁₀), ≤ 10-2.5 μm (PM(10-2.5)), and ≤ 2.5 μm (PM(2.5))] and infant mortality in a cohort in Seoul, Korea, 2004-2007.
      Methods: The study includes 359,459 births with 225 deaths. We applied extended Cox proportional hazards modeling with time-dependent covariates to three mortality categories: all causes, respiratory, and sudden infant death syndrome (SIDS). We calculated exposures from birth to death (or end of eligibility for outcome at 1 year of age) and pregnancy (gestation and each trimester) and treated exposures as time-dependent variables for subjects' exposure for each pollutant. We adjusted by sex, gestational length, season of birth, maternal age and educational level, and heat index. Each cause of death and exposure time frame was analyzed separately.
      Results: We found a relationship between gestational exposures to PM and infant mortality from all causes or respiratory causes for normal-birth-weight infants. For total mortality (all causes), risks were 1.44 (95% confidence interval, 1.06-1.97), 1.65 (1.18-2.31), 1.53 (1.22-1.90), and 1.19 (0.83-1.70) per interquartile range increase in TSP, PM₁₀, PM(2.5), and PM(10-2.5), respectively; for respiratory mortality, risks were 3.78 (1.18-12.13), 6.20 (1.50-25.66), 3.15 (1.26-7.85), and 2.86 (0.76-10.85). For SIDS, risks were 0.92 (0.33-2.58), 1.15 (0.38-3.48), 1.42 (0.71-2.87), and 0.57 (0.16-1.96), respectively.
      Conclusions: Our findings provide supportive evidence of an association of long-term exposure to PM air pollution with infant mortality.
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    • Accession Number:
      0 (Particulate Matter)
    • Publication Date:
      Date Created: 20101221 Date Completed: 20110824 Latest Revision: 20181113
    • Publication Date:
      20200827
    • Accession Number:
      PMC3094428
    • Accession Number:
      10.1289/ehp.1002364
    • Accession Number:
      21169127
  • Citations
    • ABNT:
      SON, J.-Y.; BELL, M. L.; LEE, J.-T. Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea. Environmental health perspectives, [s. l.], v. 119, n. 5, p. 725–730, 2011. DOI 10.1289/ehp.1002364. Disponível em: http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=mdc&AN=21169127&authtype=sso&custid=s5834912. Acesso em: 26 set. 2020.
    • AMA:
      Son J-Y, Bell ML, Lee J-T. Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea. Environmental health perspectives. 2011;119(5):725-730. doi:10.1289/ehp.1002364
    • APA:
      Son, J.-Y., Bell, M. L., & Lee, J.-T. (2011). Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea. Environmental Health Perspectives, 119(5), 725–730. https://doi.org/10.1289/ehp.1002364
    • Chicago/Turabian: Author-Date:
      Son, Ji-Young, Michelle L Bell, and Jong-Tae Lee. 2011. “Survival Analysis of Long-Term Exposure to Different Sizes of Airborne Particulate Matter and Risk of Infant Mortality Using a Birth Cohort in Seoul, Korea.” Environmental Health Perspectives 119 (5): 725–30. doi:10.1289/ehp.1002364.
    • Harvard:
      Son, J.-Y., Bell, M. L. and Lee, J.-T. (2011) ‘Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea’, Environmental health perspectives, 119(5), pp. 725–730. doi: 10.1289/ehp.1002364.
    • Harvard: Australian:
      Son, J-Y, Bell, ML & Lee, J-T 2011, ‘Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea’, Environmental health perspectives, vol. 119, no. 5, pp. 725–730, viewed 26 September 2020, .
    • MLA:
      Son, Ji-Young, et al. “Survival Analysis of Long-Term Exposure to Different Sizes of Airborne Particulate Matter and Risk of Infant Mortality Using a Birth Cohort in Seoul, Korea.” Environmental Health Perspectives, vol. 119, no. 5, May 2011, pp. 725–730. EBSCOhost, doi:10.1289/ehp.1002364.
    • Chicago/Turabian: Humanities:
      Son, Ji-Young, Michelle L Bell, and Jong-Tae Lee. “Survival Analysis of Long-Term Exposure to Different Sizes of Airborne Particulate Matter and Risk of Infant Mortality Using a Birth Cohort in Seoul, Korea.” Environmental Health Perspectives 119, no. 5 (May 2011): 725–30. doi:10.1289/ehp.1002364.
    • Vancouver/ICMJE:
      Son J-Y, Bell ML, Lee J-T. Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea. Environmental health perspectives [Internet]. 2011 May [cited 2020 Sep 26];119(5):725–30. Available from: http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=mdc&AN=21169127&authtype=sso&custid=s5834912