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Related Concept Videos

Clinical Trials01:16

Clinical Trials

10.7K
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...
10.7K
Clinical Trials: Overview01:11

Clinical Trials: Overview

5.0K
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...
5.0K
Statistical Software for Data Analysis and Clinical Trials01:12

Statistical Software for Data Analysis and Clinical Trials

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Statistical software is pivotal in data analysis and clinical trials by providing tools to analyze data, draw conclusions, and make predictions. These software packages range from simple data management applications to complex analytical platforms, supporting various statistical tests, models, and simulation techniques. Their significance lies in their ability to handle vast amounts of data with precision and efficiency, enabling researchers to validate hypotheses, identify trends, and make...
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Trial and Error and Algorithm01:12

Trial and Error and Algorithm

424
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
424
Phase Diagrams02:39

Phase Diagrams

50.2K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
50.2K
Phase Transitions02:31

Phase Transitions

23.2K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
23.2K

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Related Experiment Video

Updated: Feb 5, 2026

Integration of Miniaturized Solid Phase Extraction and LC-MS/MS Detection of 3-Nitrotyrosine in Human Urine for Clinical Applications
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Integration of Miniaturized Solid Phase Extraction and LC-MS/MS Detection of 3-Nitrotyrosine in Human Urine for Clinical Applications

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Are Phase 3 Clinical Trials Really Becoming More Complex?

Harold E Glass1, Jeffrey J DiFrancesco2, Lucas M Glass3

  • 11 Department of Health Policy and Public Policy, University of the Sciences in Philadelphia, Philadelphia, PA, USA.

Therapeutic Innovation & Regulatory Science
|September 18, 2018
PubMed
Summary
This summary is machine-generated.

Phase 3 clinical trials show limited changes in design, but patient treatment duration has increased. Claims of rising complexity in trial design are not yet supported by peer-reviewed data.

Keywords:
Clinicaltrials.govclinical trialsphase 3study complexitystudy design

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Area of Science:

  • Clinical trial design and execution
  • Pharmaceutical industry research

Background:

  • Analysis of mandatory fields in ClinicalTrials.gov data.
  • Focus on commercially sponsored phase 3 clinical trials.

Purpose of the Study:

  • Examine changes in phase 3 clinical trial design and execution.
  • Assess the complexity of clinical trials over time.

Main Methods:

  • Comparative analysis of baseline data from 2008 with 2013 data.
  • Utilized mandatory protocol and study design variables from ClinicalTrials.gov.

Main Results:

  • Minimal changes observed in overall protocol and study design between 2008 and 2013.
  • Significant increase in single-patient treatment duration within study protocols.
  • Lack of substantiated claims regarding increased trial complexity in peer-reviewed literature.

Conclusions:

  • Limited evidence suggests significant increases in the design and execution complexity of phase 3 clinical trials.
  • Pharmaceutical companies' trial designs have not markedly changed in complexity.