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

Lot consistency as an equivalence problem.

P A Lachenbruch1, W Rida, J Kou

  • 1U.S. FDA/Center for Biologics Evaluation and Research, Rockville, Maryland 20852, USA. lachenbruch@cber.fda.gov

Journal of Biopharmaceutical Statistics
|June 23, 2004
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

Hierarchical Construction of Higher-Order Exceptional Points.

Physical review letters·2020
Same author

Extrication process of chlorogenic acid in Crofton weed and antibacterial mechanism of chlorogenic acid on Escherichia coli.

Journal of environmental biology·2018
Same author

Extracellular DNA traps released by acute promyelocytic leukemia cells through autophagy.

Cell death & disease·2016
Same author

Diosgenin inhibits superoxide generation in FMLP-activated mouse neutrophils via multiple pathways.

Free radical research·2014
Same author

Expression profile of insulin-like growth factor system genes in muscle tissues during the postnatal development growth stage in ducks.

Genetics and molecular research : GMR·2013
Same author

Comparison and characteristics of the formation of different adipose tissues in ducks during early growth.

Poultry science·2012
Same journal

Correction.

Journal of biopharmaceutical statistics·2026
Same journal

Leveraging external controls in clinical trials: estimands, estimation, assumptions.

Journal of biopharmaceutical statistics·2026
Same journal

Special issue of nonclinical statistics in regulatory applications guest editors' notes.

Journal of biopharmaceutical statistics·2026
Same journal

Comparison of flexible parametric modeling and nonparametric methods to estimate restricted mean survival time: A simulation study.

Journal of biopharmaceutical statistics·2026
Same journal

Simulated treatment comparisons with jackknife pseudo values for estimating population-adjusted marginal treatment effects.

Journal of biopharmaceutical statistics·2026
Same journal

Sample sizes for randomized controlled trials utilizing Bayesian response adaptive randomization for continuous outcomes.

Journal of biopharmaceutical statistics·2026
See all related articles

Demonstrating vaccine manufacturing consistency requires assessing multigroup equivalence. A new similarity test offers a robust alternative to standard methods, especially for non-normally distributed data.

Area of Science:

  • Vaccine manufacturing
  • Statistical methodology
  • Regulatory science

Background:

  • Vaccine licensure in the U.S. requires manufacturers to demonstrate consistent production of vaccine lots.
  • Demonstrating manufacturing consistency is often framed as a multigroup equivalence problem.
  • Standard statistical equivalence tests typically assume normal data and focus on group means.

Purpose of the Study:

  • To propose and evaluate a novel nonparametric approach for assessing manufacturing consistency.
  • To introduce a measure of similarity among group distributions as an alternative to traditional equivalence tests.
  • To compare the statistical properties of this similarity test with standard methods using computer simulations.

Main Methods:

  • Development of a nonparametric measure of similarity between group distributions.

Related Experiment Videos

  • Utilizing nonparametric estimators for distribution comparison.
  • Conducting computer simulations to explore the properties of the proposed similarity test.
  • Comparing the performance of the similarity test against standard mean-based equivalence tests.

    • Main Results:

    • The proposed similarity test demonstrates utility in assessing vaccine manufacturing consistency.
    • The test is particularly effective when data distributions deviate from normality or exhibit differences in scale or shape.
    • The similarity test can detect departures from equivalence not captured by traditional mean-based methods.

    Conclusions:

    • A nonparametric similarity test provides a valuable alternative for demonstrating vaccine manufacturing consistency.
    • This approach enhances the ability to confirm lot-to-lot uniformity, especially in complex data scenarios.
    • The findings support the use of distribution similarity for robust vaccine quality assessment.