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Related Experiment Videos

Methodological and statistical techniques: what do residents really need to know about statistics?

James F Reed1, Philip Salen, Pooneh Bagher

  • 1Research Institute, St. Lukes Hospital & Health Network, Bethlehem, Pennsylvania, USA. reedj@slhn.org

Journal of Medical Systems
|April 23, 2003
PubMed
Summary

A review of medical journals found that mastering descriptive statistics, Student's t-test, and Pearson's chi-square/Fisher's Exact test enables physicians to understand over 70% of published medical literature.

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Area of Science:

  • Medical Statistics
  • Clinical Research Methodology

Background:

  • Statistical method application varies across medical specialties.
  • Understanding common statistical tests is crucial for interpreting medical literature.

Purpose of the Study:

  • To catalog statistical methods used in Family Practice, Emergency Medicine, and Obstetrics & Gynecology journals.
  • To identify the most frequently used statistical tests in these fields.

Main Methods:

  • Quantitative articles from six medical journals (Jan 1998-Dec 2000) were reviewed.
  • Case reports and editorials were excluded from the analysis.
  • A total of 1828 articles were analyzed for statistical test usage.

Main Results:

  • Pearson's chi-square/Fisher's Exact test (47.5%) and Student's t-test (33.1%) were the most common statistical methods.

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  • Analysis of variance (23.3%), linear regression (17.6%), and logistic regression (17.4%) were also frequently used.
  • Familiarity with these core methods allows interpretation of at least 70% of the literature.

    • Conclusions:

    • A strong grasp of basic statistical tests is sufficient for interpreting the majority of published medical research.
    • Educational initiatives should prioritize teaching fundamental statistical concepts and appropriate study design.