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    Smoking, Alcohol, Diabetes, Obesity, Socioeconomic Status, and the Risk of Colorectal Cancer in a Population-Based Case–Control Study

    204897_204897.pdf (243.8Kb)
    Access Status
    Open access
    Authors
    Boyle, T.
    Fritschi, Lin
    Tabatabaei, S.
    Ringwald, K.
    Heyworth, J.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Boyle, T. and Fritschi, L. and Tabatabaei, S. and Ringwald, K. and Heyworth, J. 2014. Smoking, Alcohol, Diabetes, Obesity, Socioeconomic Status, and the Risk of Colorectal Cancer in a Population-Based Case–Control Study. Cancer Causes and Control. 25 (12): pp. 1659-1668.
    Source Title
    Cancer Causes and Control
    DOI
    10.1007/s10552-014-0470-7
    ISSN
    09575243
    School
    School of Public Health
    Remarks

    The final publication is available at Springer via http://doi.org/10.1007/s10552-014-0470-7

    URI
    http://hdl.handle.net/20.500.11937/28672
    Collection
    • Curtin Research Publications
    Abstract

    Purpose: Although previous research has identified factors that may determine willingness to participate in research, relatively few studies have attempted to quantify the impact non-participation may have on exposure–disease associations. The aims of this study were to (a) investigate the associations between smoking, alcohol, diabetes, obesity, and socioeconomic status and the risk of colorectal cancer in a case–control study (59.7 and 47.2 % response fractions among cases and controls, respectively); and (b) perform sensitivity analyses to examine the possible influence of non-participation. Methods: Logistic regression was used to estimate the exposure–disease associations. We then investigated the associations between various demographic and health factors and the likelihood that an individual would participate in the case–control study and then performed two sensitivity analyses (sampling weights and multiple imputation) to examine whether non-participation bias may have influenced the exposure–disease associations. Results: The exposures alcohol, smoking, and diabetes were associated with an increased risk of colorectal cancer. We found some differences between cases and controls when examining the factors associated with the participation in the study, and in the sensitivity analyses, the exposure–disease associations were slightly attenuated when compared with those from the original analysis. Conclusion: Non-participation may have biased the risk estimates away from the null, but generally not enough to change the conclusions of the study.

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