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EPS and iPS Cells in Disease Research

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Updated: Jun 25, 2026

Inverse Probability of Treatment Weighting (Propensity Score) using the Military Health System Data Repository and National Death Index
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Published on: January 8, 2020

When is a case-control study not a case-control study?

Nancy E Mayo1, Mark S Goldberg

  • 1Department of Medicine, Division of Clinical Epidemiology, McGill University, Quebec, Canada. nancy.mayo@mcgill.ca

Journal of Rehabilitation Medicine
|February 28, 2009
PubMed
Summary
This summary is machine-generated.

Rehabilitation journals frequently mislabel studies as "case-control" (97%), confusing study design with subject labels. This poor understanding of case-control methodology impacts research interpretation.

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Last Updated: Jun 25, 2026

Inverse Probability of Treatment Weighting (Propensity Score) using the Military Health System Data Repository and National Death Index
06:55

Inverse Probability of Treatment Weighting (Propensity Score) using the Military Health System Data Repository and National Death Index

Published on: January 8, 2020

Area of Science:

  • Medical Research Methodology
  • Rehabilitation Science
  • Epidemiology

Background:

  • The term "case-control study" is often misused in scientific literature, leading to confusion between study subjects and study design.
  • This ambiguity can result in misinterpretation of research findings and hinder the advancement of evidence-based practices.

Purpose of the Study:

  • To quantify the extent of mislabeling of "case-control studies" within the rehabilitation literature.
  • To compare the rate of mislabeling in rehabilitation journals with that in other health disciplines.

Main Methods:

  • A structured review of 7 rehabilitation journals (2000-2006) identified 86 articles with "case-control" in the title or abstract.
  • A comparative sample of non-rehabilitation journals (titles starting with "Archives of") was also analyzed.

Main Results:

  • Rehabilitation journals exhibited a high mislabeling rate of 97% (83/86 studies).
  • Non-rehabilitation journals showed a lower mislabeling rate of 34% (76/221 studies).
  • Commonly misclassified studies in rehabilitation included cross-sectional (56/86) and intervention studies (13/86).

Conclusions:

  • The findings indicate a significant lack of understanding of the case-control study design within the rehabilitation research community.
  • Correctly reporting study designs is crucial for accurate interpretation of research findings and to avoid semantic confusion.
  • Rehabilitation researchers should prioritize accurate reporting of study designs, particularly for case-control studies, to ensure scientific rigor.