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

Testing a genetic equilibrium across strata

J M Nam1

  • 1Biostatistics Branch, National Cancer Institute, Rockville, Maryland 20892, USA.

Annals of Human Genetics
|March 1, 1997
PubMed
Summary
This summary is machine-generated.

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

A pilot study to rate determinants of exposure from videotaped work activities of farmers' use of pesticides.

Applied occupational and environmental hygiene·2001
Same author

Power and sample size for testing homogeneity of relative risks in prospective studies.

Biometrics·2001
Same author

Interval estimation of the kappa coefficient with binary classification and an equal marginal probability model.

Biometrics·2000
Same author

Association of major histocompatibility complex determinants with the development of symptomatic and asymptomatic genital herpes simplex virus type 2 infections.

The Journal of infectious diseases·1999
Same author

Human leukocyte antigen class II alleles associated with human T-cell lymphotropic virus type I infection and adult T-cell leukemia/lymphoma in a Black population.

Journal of the National Cancer Institute·1998
Same author

Power and sample size for stratified prospective studies using the score method for testing relative risk.

Biometrics·1998
Same journal

FIGLA Novel Variant c.385-9G>A Affects RNA Splicing in a Minigene Assay.

Annals of human genetics·2026
Same journal

Epigenetic Shifts in MTNR1A, MTNR1B and Fn14 and Their Links to Preeclampsia Risk.

Annals of human genetics·2026
Same journal

Hip Bone Marrow Adiposity as a Risk Factor for Alzheimer's Disease: Insights From Mendelian Randomization Analysis.

Annals of human genetics·2026
Same journal

A Novel Biallelic REL Frameshift Variant p.(Tyr9Ilefs*2) Causing Immunodeficiency-92 With Profound c-Rel Deficiency.

Annals of human genetics·2026
Same journal

Identification of PSMA4 as a Therapeutic Target for Atherosclerosis: A Comprehensive Multiomics Mendelian Randomization Analysis.

Annals of human genetics·2026
Same journal

Genetic Insights Into Hypertension and Breast Cancer Risk in African Women: A Mendelian Randomization and Colocalization Analyses.

Annals of human genetics·2026
See all related articles

This study introduces a powerful score test for Hardy-Weinberg equilibrium in multiple populations, offering a more sensitive method for detecting genetic disequilibrium than traditional tests. It also provides a sample size formula for future genetic studies.

Area of Science:

  • Population Genetics
  • Statistical Genetics
  • Human Genetics

Background:

  • The Hardy-Weinberg law is fundamental for understanding population genetics and genetic equilibrium.
  • Testing Hardy-Weinberg equilibrium is crucial for identifying evolutionary forces acting on populations.
  • Existing statistical tests may lack sufficient power, especially in stratified populations with varying allele frequencies.

Purpose of the Study:

  • To derive a score statistic for testing Hardy-Weinberg law in multi-population data with a common disequilibrium coefficient.
  • To evaluate the power of the proposed score test against existing Wald-type tests.
  • To provide a sample size calculation formula for the stratified score test.

Main Methods:

  • Derivation of a score statistic for testing Hardy-Weinberg law under a common odds ratio across strata.

Related Experiment Videos

  • Utilized a chi-square goodness-of-fit test to examine the common disequilibrium coefficient assumption.
  • Compared the power of the score test with a Wald-type test.

    • Main Results:

    • A novel score statistic for testing Hardy-Weinberg law in stratified populations was developed.
    • The score test demonstrated substantially higher power compared to the Wald-type test under the assumed model.
    • A chi-square test can assess the validity of the common disequilibrium coefficient assumption, which is unlikely to be rejected in human population studies.

    Conclusions:

    • The derived score test offers a more powerful approach for detecting departures from Hardy-Weinberg equilibrium in stratified populations.
    • The proposed statistical framework is robust and practical for human population genetics research.
    • An approximate formula for sample size estimation ensures adequate power for future genetic disequilibrium studies.