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Related Experiment Videos

Selected risk factors for transitional cell bladder cancer.

S Sadetzki1, D Bensal, T Blumstein

  • 1Department of Clinical Epidemiology, Chaim Sheba Medical Center, Tel Hashomer, and Stanley Steyer Institute for Cancer Epidemiology and Research, Tel Aviv University Medical School, Israel. siegals@gertner.health.gov.il

Medical Oncology (Northwood, London, England)
|August 30, 2000
PubMed
Summary

Industrial occupation and metal exposure are significant risk factors for bladder cancer. Smoking

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Area of Science:

  • Environmental epidemiology
  • Occupational health
  • Urologic oncology

Background:

  • Bladder cancer is linked to environmental factors like occupational hazards and smoking.
  • Global efforts aim to control environmental hazards contributing to cancer.
  • Understanding community-level risk factor contributions is crucial.

Purpose of the Study:

  • To assess the impact of known risk factors on bladder cancer in a community setting during the 1990s.
  • To evaluate the effectiveness of environmental control measures on bladder cancer rates.
  • To identify significant occupational and lifestyle factors associated with bladder cancer.

Main Methods:

  • Case-control study involving 140 male bladder cancer patients and 280 matched controls.

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  • Data collection through personal interviews covering demographics, occupational history, smoking habits, and medical history.
  • Statistical analysis using odds ratios (OR) and 95% confidence intervals (CI) to determine risk factor significance.

    • Main Results:

    • Industrial occupation (OR=2.21) and exposure to three or more metals (OR=3.65) were confirmed as significant risk factors.
    • Prostate enlargement showed a significant association (OR=2.23), though likely not causal.
    • Smoking demonstrated an inconsistent association, with higher risks observed for early initiation (before 18) and heavy smoking (>30 cigarettes/day).

    Conclusions:

    • Environmental measures to reduce bladder cancer burden have not yet shown significant population-level effects.
    • Occupational exposures, particularly to metals, remain critical risk factors for bladder cancer.
    • The role of smoking requires further investigation, especially concerning early-onset and heavy smoking patterns.