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Statistical issues for research on social drinkers.

R Schoenberg

    Recent Developments in Alcoholism : an Official Publication of the American Medical Society on Alcoholism, the Research Society on Alcoholism, and the National Council on Alcoholism
    |January 1, 1985
    PubMed
    Summary
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    Alcohol research faces challenges with uncontrolled variation. Proper statistical methods and sampling are crucial for reliable findings, avoiding issues like variable categorization and promoting replicability.

    Area of Science:

    • Alcohol research
    • Statistical modeling
    • Research methodology

    Background:

    • Uncontrolled variation in dependent variables is a significant challenge in alcohol research.
    • Quasi-experimental and survey methods are often employed to statistically control for residual variation.
    • Improper application of these methods can compromise research findings and replicability.

    Purpose of the Study:

    • To identify and discuss ill-advised statistical and sampling practices in alcohol research.
    • To recommend improved methodologies for more robust and replicable alcohol studies.
    • To address the challenges posed by uncontrolled variation in alcohol-dependent variables.

    Main Methods:

    • Critique of common statistical techniques such as partial correlations and standardized regression coefficients.

    Related Experiment Videos

  • Analysis of the impact of categorizing or truncating independent variables.
  • Evaluation of sampling strategies, including the use of convenient samples.

    • Main Results:

    • Partial correlations and standardized regression coefficients are often misused.
    • Categorization of independent variables can obscure true relationships.
    • Convenience sampling introduces bias and limits generalizability.

    Conclusions:

    • Researchers should utilize unstandardized regression models for clearer interpretation.
    • Independent variables should not be categorized; natural or agreed-upon units are preferred.
    • Employing randomization or random sampling is essential for valid alcohol research.