Ambient air pollution and incident bladder cancer risk: Updated analysis of the Spanish Bladder Cancer Study

  • Michelle C. Turner
    Barcelona Institute for Global Health (ISGlobal) Barcelona Spain
  • Esther Gracia‐Lavedan
    Barcelona Institute for Global Health (ISGlobal) Barcelona Spain
  • Marta Cirac
    Barcelona Institute for Global Health (ISGlobal) Barcelona Spain
  • Gemma Castaño‐Vinyals
    Barcelona Institute for Global Health (ISGlobal) Barcelona Spain
  • Núria Malats
    Spanish National Cancer Research Centre (CNIO) and CIBERONC Madrid Spain
  • Adonina Tardon
    CIBER Epidemiología y Salud Pública (CIBERESP) Madrid Spain
  • Reina Garcia‐Closas
    Unidad de Investigación, Hospital Universitario de Canarias Tenerife Spain
  • Consol Serra
    Universitat Pompeu Fabra (UPF) Barcelona Spain
  • Alfredo Carrato
    Ramón y Cajal University Hospital, Alcalá University, IRYCIS, CIBERONC Madrid Spain
  • Rena R. Jones
    Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics National Cancer Institute Bethesda MD
  • Nathaniel Rothman
    Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics National Cancer Institute Bethesda MD
  • Debra T. Silverman
    Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics National Cancer Institute Bethesda MD
  • Manolis Kogevinas
    Barcelona Institute for Global Health (ISGlobal) Barcelona Spain

抄録

<jats:p>Although outdoor air pollution and particulate matter in outdoor air have been consistently linked with increased lung cancer risk, the evidence for associations at other cancer sites is limited. Bladder cancer shares several risk factors with lung cancer and some positive associations of ambient air pollution and bladder cancer risk have been observed. This study examined associations of ambient air pollution and bladder cancer risk in the large‐scale Spanish Bladder Cancer Study. Estimates of ambient fine particulate matter (PM<jats:sub>2.5</jats:sub>) and nitrogen dioxide (NO<jats:sub>2</jats:sub>) concentrations were assigned to the geocoded participant residence of 938 incident bladder cancer cases and 973 hospital controls based on European multicity land‐use regression models. Adjusted odds ratios (ORs) and 95% confidence intervals (CI) for associations of ambient air pollution and bladder cancer risk were estimated using unconditional logistic regression models. Overall, there was no clear association between either ambient PM<jats:sub>2.5</jats:sub> (OR per 5.9 μg/m<jats:sup>3</jats:sup> = 1.06, 95% CI 0.71–1.60) or NO<jats:sub>2</jats:sub> (OR per 14.2 μg/m<jats:sup>3</jats:sup> = 0.97, 95% CI 0.84–1.13) concentrations and incident bladder cancer risk. There was no clear evidence for effect modification according to age group, sex, region, education, cigarette smoking status, or pack‐years. Results were also similar among more residentially stable participants and in two‐pollutant models. Overall, there was no clear evidence for associations of ambient PM<jats:sub>2.5</jats:sub> and NO<jats:sub>2</jats:sub> concentrations and incident bladder cancer risk. Further research in other large‐scale population studies is needed with detailed information on measured or modeled estimates of ambient air pollution concentrations and individual level risk factors.</jats:p>

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