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[Social class differences in bladder cancer in Catalonia]
J Fortuny1, C Serra, X Bonfill
1Unitat de Recerca Respiratòria i Ambiental, Institut Municipal d'Investigació Médica, Barcelona, España.
Gaceta Sanitaria
|September 9, 1999
Summary
Socio-economic status shows weak links to bladder cancer risk in Catalonia, with smoking heavily influencing the observed differences. Lifetime occupational exposure measures are more informative than current social class for assessing risk.
Area of Science:
- Epidemiology
- Environmental Health
- Oncology
Background:
- Bladder cancer risk can be influenced by socio-economic factors and occupational exposures.
- Understanding these disparities is crucial for public health interventions in industrialised regions.
Purpose of the Study:
- To investigate socio-economic differences in bladder cancer incidence.
- To identify risk factors, including smoking and occupation, associated with these differences in Catalonia, Spain.
Main Methods:
- A case-control study involving 218 bladder cancer cases and 344 population controls in Vallès Occidental, Catalonia.
- Socio-economic status assessed via education and social class (last/longest occupation); logistic regression used for analysis.
Main Results:
- No significant association found between education level and bladder cancer risk.
- Weak association between social class and bladder cancer, with higher risk in higher social classes, particularly when using last occupation.
- Heavy smoking prevalence was highest in the lowest social class (V) and lowest in the highest (I); adjusting for smoking amplified social class differences.
Conclusions:
- No pronounced socio-economic differences in bladder cancer observed, aligning with other European patterns.
- Lifetime occupational experience is a more reliable indicator of socio-economic patterns than current status.
- Smoking is a key mediator, but other unidentified factors likely contribute to bladder cancer risk differentials, especially in higher social classes.