Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Methodological issues in case-control studies: II. Test statistics as measures of efficiency.

B C Choi, G R Howe

    International Journal of Epidemiology
    |June 1, 1984
    PubMed
    Summary

    Matching in case-control studies is rarely justified. Pooled analysis is more efficient than stratified analysis, and matching can significantly reduce efficiency, especially in overmatching situations.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Describing the population health burden of depression: health-adjusted life expectancy by depression status in Canada.

    Health promotion and chronic disease prevention in Canada : research, policy and practice·2016
    Same author

    On the nature of magnetic state in the spinel Co₂SnO₄.

    Journal of physics. Condensed matter : an Institute of Physics journal·2015
    Same author

    Sub-nanosecond time-resolved near-field scanning magneto-optical microscope.

    The Review of scientific instruments·2015
    Same author

    Mammography.

    Canadian Medical Association journal·2010
    Same author

    Asthma in children: Management practices among paediatricians and family physicians.

    Paediatrics & child health·2010
    Same author

    Autoimmune thyroiditis and exposure to iodine 131 in the Ukrainian cohort study of thyroid cancer and other thyroid diseases after the Chornobyl accident: results from the first screening cycle (1998-2000).

    The Journal of clinical endocrinology and metabolism·2006

    Area of Science:

    • Epidemiology
    • Biostatistics

    Background:

    • Case-control studies are essential for etiological research.
    • Assessing the efficiency of different study designs and analysis methods is crucial for robust epidemiological findings.

    Purpose of the Study:

    • To compare the efficiency of matched versus unmatched designs in case-control studies.
    • To evaluate the efficiency of stratified versus pooled analyses.
    • To provide evidence regarding the justification of matching in case-control studies.

    Main Methods:

    • Utilized the ratio of test statistics to quantify efficiency differences.
    • Computed an index across a wide range of population conditions.
    • Assessed performance under varying degrees of matching and confounding.

    Related Experiment Videos

    Main Results:

    • Pooled analysis consistently demonstrated higher efficiency than stratified analysis when valid relative risk estimates were obtained.
    • Matching, particularly in classic overmatching scenarios, led to substantial losses in statistical efficiency.
    • In confounding situations, efficiency differences between matched and unmatched designs were generally small, with either design potentially being more efficient.

    Conclusions:

    • The findings support the argument that matching is infrequently warranted in case-control studies due to potential efficiency losses.
    • Pooled analysis offers a more efficient approach compared to stratified analysis under specific conditions.
    • The choice between matched and unmatched designs in the presence of confounding requires careful consideration of minimal efficiency gains from matching.