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Related Concept Videos

Bioequivalence Data: Statistical Interpretation01:16

Bioequivalence Data: Statistical Interpretation

The statistical interpretation of bioequivalence data is a significant aspect of pharmaceutical research. Bioequivalence refers to the absence of any significant difference in the rate and extent to which the active ingredient in pharmaceutical products becomes available at the site of drug action when administered at the same molar dose under similar conditions. This helps determine if different drug products have similar absorption rates, ensuring their interchangeability.Statistical...
Bioequivalence studies: Biowaivers01:13

Bioequivalence studies: Biowaivers

In certain scenarios, in vitro dissolution tests can replace in vivo bioequivalence studies. This is particularly true when a drug product, though available in varying strengths, maintains proportional similarity in its active and inactive ingredients. In such cases, the need for in vivo bioequivalence studies for lower strength variants may be waived, provided dissolution tests and in vivo studies on the highest strength yield satisfactory results.Bioequivalence can be indicated through...
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs01:20

Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs

Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to subjects...
Bioequivalence: Overview01:16

Bioequivalence: Overview

Pharmaceutical equivalents, by definition, are drug products with the same active ingredient in the same quantities, encapsulated in identical dosage forms, and intended for the same administration routes. These pharmaceutical equivalents are deemed bioequivalent if the bioavailability of the active entity in the drug preparations is similar. Moreover, pharmaceutical equivalents demonstrating bioequivalence are also regarded as therapeutically equivalent. This means that when used as directed,...
Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs01:15

Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs

Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...
Equivalence: In Vitro and In Vivo Bioequivalence01:17

Equivalence: In Vitro and In Vivo Bioequivalence

Bioequivalence studies are crucial in evaluating whether new drugs can match an approved one regarding pharmacological effects and clinical performance. These studies test if drugs, despite different dosage forms, share identical plasma concentration-time profiles. Three types of equivalence are central to these studies: chemical, pharmaceutical, and therapeutic. Chemical equivalence indicates that two or more drug products contain identical active ingredients in equal amounts. Pharmaceutical...

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In Vitro Methods for Comparing Target Binding and CDC Induction Between Therapeutic Antibodies: Applications in Biosimilarity Analysis
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The bootstrap in bioequivalence studies.

Iris Pigeot1, Dieter Hauschke, Jun Shao

  • 1Bremen Institute for Prevention Research and Social Medicine, University of Bremen, Bremen, Germany. pigeot@bips.uni-bremen.de

Journal of Biopharmaceutical Statistics
|October 26, 2011
PubMed
Summary
This summary is machine-generated.

The U.S. Food and Drug Administration (FDA) introduced population and individual bioequivalence concepts in 1997. This review focuses on bootstrap methods for assessing drug formulation bioequivalence.

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Area of Science:

  • Pharmacokinetics and Biopharmaceutics
  • Statistical Methods in Drug Development

Background:

  • The U.S. Food and Drug Administration (FDA) proposed new bioequivalence assessment concepts in 1997.
  • Traditional bioequivalence measures were expanded to include population and individual perspectives.

Purpose of the Study:

  • To review the historical development of population and individual bioequivalence.
  • To highlight the role of the bootstrap method in bioequivalence assessments.

Main Methods:

  • Discussion of aggregate moment-based and probability-based bioequivalence measures.
  • Explanation of nonparametric bootstrap percentile intervals for statistical decision-making.

Main Results:

  • The FDA's 1997 guidance introduced novel concepts for drug formulation bioequivalence.
  • Bootstrap methods offer a statistical approach for determining bioequivalence.

Conclusions:

  • Population and individual bioequivalence represent significant advancements in drug assessment.
  • The bootstrap method is a key statistical tool in modern bioequivalence studies.