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 Concept Videos

Statistical Inference Techniques in Hypothesis Testing: Parametric Versus Nonparametric Data01:16

Statistical Inference Techniques in Hypothesis Testing: Parametric Versus Nonparametric Data

Statistical inference techniques, paramount in hypothesis testing, differentiate into two broad categories: parametric and nonparametric statistics.
Parametric statistics, as the name suggests, assumes that data follow a specific distribution, often a normal distribution. This assumption enables robust hypothesis testing and estimation. Parametric methods, like the Student's t-test or Goodness-of-fit test, are frequently employed in biostatistics due to their robustness. For instance, comparing...
Noncompartmental Analysis: Miscellaneous Pharmacokinetic Parameters00:54

Noncompartmental Analysis: Miscellaneous Pharmacokinetic Parameters

The noncompartmental approach is a widely used method in pharmacokinetics to assess drugs' behaviors in the body. It considers several factors, including clearance, bioavailability, and total volume of distribution.
One key aspect of the noncompartmental approach is determining a drug's total clearance. This can be done by dividing the drug dose by the area under the concentration-time curve from zero to infinity. The area under the concentration-time curve represents the drug's overall...
Bioavailability Study Design: Absolute Versus Relative Bioavailability01:27

Bioavailability Study Design: Absolute Versus Relative Bioavailability

Bioavailability is a crucial pharmacokinetic parameter that quantifies the proportion of an administered drug that reaches the systemic circulation and is available for therapeutic action. Regulatory agencies mandate the assessment of bioavailability, typically measured as the area under the drug plasma concentration-versus-time curve (AUC), to ensure the efficacy and safety of pharmaceutical products. These evaluations are categorized as absolute and relative bioavailability studies.Absolute...
Bioavailability Study Design: Single Versus Multiple Dose Studies01:11

Bioavailability Study Design: Single Versus Multiple Dose Studies

Bioavailability studies are essential for understanding how a drug is absorbed, distributed, metabolized, and excreted in the body. These studies assess the extent and rate at which the active pharmaceutical agent becomes available at the site of action. The design of bioavailability studies can involve single-dose or multiple-dose regimens, each with distinct advantages and limitations.Single-dose studies are the preferred approach due to their simplicity and reduced drug exposure for...
Measurement of Bioavailability: Pharmacokinetic Methods01:30

Measurement of Bioavailability: Pharmacokinetic Methods

Pharmacokinetics is a vital branch of pharmacology that examines how drugs are absorbed, distributed, metabolized, and excreted by the body. Two key methodologies in pharmacokinetics are plasma drug concentration studies and urinary drug excretion analyses, both of which provide critical insights into a drug's therapeutic efficacy and bioavailability.Plasma Drug Concentration-Time StudiesPlasma drug concentration-time studies involve analyzing blood samples at specific intervals to quantify...
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...

You might also read

Related Articles

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

Sort by
Same author

Lack of pharmacokinetic drug-drug interaction between ciclesonide and erythromycin.

International journal of clinical pharmacology and therapeutics·2005
Same author

The U.S. draft guidance regarding population and individual bioequivalence approaches: comments by a research-based pharmaceutical company.

Statistics in medicine·2000
Same author

Equivalence concepts in clinical trials.

European journal of drug metabolism and pharmacokinetics·2000
Same author

A dose-dependent effect of the novel inhaled corticosteroid ciclesonide on airway responsiveness to adenosine-5'-monophosphate in asthmatic patients.

American journal of respiratory and critical care medicine·1999
Same author

Pantoprazole lacks induction of CYP1A2 activity in man.

International journal of clinical pharmacology and therapeutics·1999
Same author

Sample size determination for proving equivalence based on the ratio of two means for normally distributed data.

Statistics in medicine·1999

Related Experiment Video

Updated: Jun 26, 2026

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
04:53

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition

Published on: September 20, 2019

Statistical analysis of bioavailability studies: parametric and nonparametric confidence intervals.

V W Steinijans, E Diletti

    European Journal of Clinical Pharmacology
    |January 1, 1983
    PubMed
    Summary

    This study reviews methods for calculating bioavailability confidence intervals in crossover designs. It compares classical ANOVA, Westlake

    More Related Videos

    An Intestine/Liver Microphysiological System for Drug Pharmacokinetic and Toxicological Assessment
    08:59

    An Intestine/Liver Microphysiological System for Drug Pharmacokinetic and Toxicological Assessment

    Published on: December 3, 2020

    Profiling Ubiquitin and Ubiquitin-like Dependent Post-translational Modifications and Identification of Significant Alterations
    10:26

    Profiling Ubiquitin and Ubiquitin-like Dependent Post-translational Modifications and Identification of Significant Alterations

    Published on: November 7, 2019

    Related Experiment Videos

    Last Updated: Jun 26, 2026

    A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
    04:53

    A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition

    Published on: September 20, 2019

    An Intestine/Liver Microphysiological System for Drug Pharmacokinetic and Toxicological Assessment
    08:59

    An Intestine/Liver Microphysiological System for Drug Pharmacokinetic and Toxicological Assessment

    Published on: December 3, 2020

    Profiling Ubiquitin and Ubiquitin-like Dependent Post-translational Modifications and Identification of Significant Alterations
    10:26

    Profiling Ubiquitin and Ubiquitin-like Dependent Post-translational Modifications and Identification of Significant Alterations

    Published on: November 7, 2019

    Area of Science:

    • Pharmacokinetics
    • Biostatistics
    • Drug Development

    Background:

    • Bioavailability studies commonly employ two-way crossover designs.
    • Accurate estimation of bioavailability is crucial for drug efficacy and safety.
    • Classical analysis of variance (ANOVA) is a standard method for calculating confidence limits.

    Purpose of the Study:

    • To review and compare statistical methods for determining 95%-confidence limits of bioavailability.
    • To evaluate parametric and nonparametric approaches for bioavailability data analysis.
    • To discuss the assumptions and advantages of different statistical procedures.

    Main Methods:

    • Classical analysis of variance (ANOVA) for parametric confidence limits.
    • Westlake's modification for symmetric confidence intervals.
    • Nonparametric methods: Tukey's adaptation of Wilcoxon's signed rank test and Pitman's permutation test.

    Main Results:

    • Classical ANOVA provides confidence limits for bioavailability.
    • Westlake's modification offers interval symmetry around zero or unity.
    • Nonparametric tests provide alternative approaches for bioavailability ratio analysis.

    Conclusions:

    • Various statistical methods exist for bioavailability confidence intervals in crossover studies.
    • The choice of method depends on desired interval properties and data distribution.
    • Nonparametric methods offer robust alternatives when assumptions of parametric tests are not met.