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The million women study: a critique
Malcolm Whitehead1, Richard Farmer
1King's College Hospital NHS Trust, Denmark Hill, London SE5 9RS, UK. whitehead@btconnect.com
Endocrine
|November 16, 2004
Summary
The Million Women Study (MWS) results were released with immediate regulatory advice, bypassing scientific review. Methodological flaws in the MWS design make its findings largely uninterpretable due to inherent biases affecting risk estimates.
Area of Science:
- Epidemiology
- Medical Research Methodology
Background:
- The Committee on Safety of Medicines issued urgent advice following the Million Women Study (MWS) publication.
- This action preceded a comprehensive review by the international medical and scientific community.
Purpose of the Study:
- To critically evaluate the methodology employed in the Million Women Study (MWS).
- To assess the validity and interpretability of the MWS findings in light of potential design flaws.
Main Methods:
- Review of the Million Women Study (MWS) research design and methodology.
- Analysis of potential biases introduced by the study's inherent design features.
Main Results:
- Identified significant flaws within the MWS methodology.
- Concluded that built-in biases compromise the accuracy of the risk estimates presented in the MWS.
Conclusions:
- The methodological weaknesses of the MWS render its results largely uninterpretable.
- Biases present in the study design significantly impact the reliability of the reported risk estimates.