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Related Concept Videos

Clinical Trials01:16

Clinical Trials

6.6K
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...
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Hazard Ratio01:12

Hazard Ratio

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The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial...
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Blinding01:11

Blinding

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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.
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Randomized Experiments01:13

Randomized Experiments

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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
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Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

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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,...
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Ethics in Research01:56

Ethics in Research

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Today, scientists agree that good research is ethical in nature and is guided by a basic respect for human dignity and safety. However, this has not always been the case. Modern researchers must demonstrate that the research they perform is ethically sound.
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A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
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CONSORT 2025 statement: updated guideline for reporting randomized trials.

Sally Hopewell1, An-Wen Chan2, Gary S Collins3

  • 1Oxford Clinical Trials Research Unit, Centre for Statistics in Medicine, University of Oxford, Oxford, UK. sally.hopewell@csm.ox.ac.uk.

Nature Medicine
|April 14, 2025
PubMed
Summary
This summary is machine-generated.

The updated CONSORT 2025 statement enhances reporting quality for randomized trials. This revised guideline ensures clearer, more transparent reporting of trial results for healthcare interventions.

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Area of Science:

  • Clinical Trials Methodology
  • Scientific Reporting Standards

Background:

  • Randomized trials are crucial for healthcare evidence, but reporting quality is often suboptimal.
  • The CONSORT (Consolidated Standards of Reporting Trials) statement aims to improve this by providing essential reporting items.

Purpose of the Study:

  • To present the updated CONSORT 2025 statement, incorporating recent methodological advancements and user feedback.
  • To enhance the clarity and transparency of randomized trial reporting.

Main Methods:

  • Conducted a scoping review and developed a project-specific database of evidence related to CONSORT.
  • Utilized a three-round international Delphi survey with 317 participants and an expert consensus meeting of 30 international experts.
  • Assessed and integrated recommendations from CONSORT extensions and related guidelines like TIDieR.

Main Results:

  • Substantive revisions to the CONSORT checklist, including adding seven new items, revising three, deleting one, and integrating items from extensions.
  • Restructured the checklist with a new section on open science.
  • The CONSORT 2025 statement features a 30-item checklist and a participant flow diagram, with an expanded version for implementation.

Conclusions:

  • CONSORT 2025 provides essential guidelines for reporting randomized trials to ensure clarity and transparency.
  • Authors, editors, and reviewers should adopt CONSORT 2025 for evaluating and writing trial manuscripts.