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Related Concept Videos

Clinical Trials01:16

Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
Blinding01:11

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
Clinical Trials: Overview01:11

Clinical Trials: Overview

Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
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...
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...

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Related Experiment Video

Updated: Jul 10, 2026

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
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Problems in interpreting cost effectiveness in clinical trials. Experimental versus implementation costs

L A De Nino1, C D Mulrow, M B Gerety

  • 1Geriatric Research, Education and Clinical Center, Audie L. Murphy Memorial Veterans Hospital, San Antonio, TX 78284.

The Online Journal of Current Clinical Trials
|April 10, 1993
PubMed
Summary

Estimating the cost effectiveness of interventions can be challenging. Clinical trial data may not accurately reflect real-world implementation costs and effectiveness, necessitating pre-implementation studies.

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Area of Science:

  • Health economics
  • Intervention research
  • Evidence-based practice

Background:

  • Clinical trials provide valuable data on intervention effectiveness and cost.
  • However, trial conditions may not directly translate to diverse real-world implementation settings.
  • This can lead to discrepancies in estimated cost effectiveness.

Purpose of the Study:

  • To highlight the challenges in estimating intervention cost effectiveness using clinical trial data.
  • To demonstrate how alternative implementation strategies can impact economic outcomes.
  • To emphasize the need for pre-implementation assessments.

Main Methods:

  • Utilized two case examples from hearing-aid and physical therapy trials.
  • Employed sensitivity analysis to explore a range of economic outcomes.
  • Estimated costs and cost-effectiveness ratios for alternative implementation strategies.

Main Results:

  • Significant cost reductions (e.g., through staffing/equipment changes) are possible in implementation.
  • Modifications in resources, protocols, or target populations can affect intervention effectiveness, potentially by up to 50%.
  • Alternative strategies may remain cost effective despite reduced effectiveness.

Conclusions:

  • The cost effectiveness of interventions can substantially differ between trial settings and real-world implementations.
  • Different resources and target populations significantly influence economic outcomes.
  • Institutions should conduct pre-implementation studies to evaluate resource configurations before adopting trial-based interventions.