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Related Concept Videos

Randomized Experiments01:13

Randomized Experiments

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

Statistical Software for Data Analysis and Clinical Trials

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...
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.

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Related Experiment Video

Updated: May 27, 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

RandoWeb, an online randomization tool for clinical trials.

Vincent Morice1

  • 1Groupe Hospitalier Pitié-Salpêtrière, Faculté de Médecine de l'Université Pierre et Marie Curie, Paris, France. vincent.morice@upmc.fr

Computer Methods and Programs in Biomedicine
|December 3, 2011
PubMed
Summary

RandoWeb is a versatile online tool for clinical trial randomization, offering flexible methods like minimization and stratified block randomization. It enhances patient data management and trial integrity, even with early termination.

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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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E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy

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Area of Science:

  • Clinical Trials
  • Biostatistics
  • Health Informatics

Background:

  • Clinical trial randomization ensures unbiased treatment allocation.
  • Existing tools may lack flexibility in randomization methods and data management.
  • Secure and adaptable randomization is crucial for trial integrity.

Purpose of the Study:

  • To introduce RandoWeb, a novel generic tool for online clinical trial randomization.
  • To highlight RandoWeb's capabilities in user authorization, data collection, and flexible randomization methods.
  • To demonstrate RandoWeb's utility in maintaining trial balance and managing patient data.

Main Methods:

  • RandoWeb supports user-defined randomization methods, including randomization lists and dynamic minimization.
  • It allows configuration of patient data collection and user access rights.
  • Employs stratified block randomization with a modified block definition, accommodating non-integer sizes for enhanced balance.

Main Results:

  • RandoWeb provides a flexible platform for online randomization in clinical trials.
  • The tool facilitates secure user management and diverse data collection parameters.
  • Its unique block randomization supports trial arm balance, even with premature stopping.

Conclusions:

  • RandoWeb offers a robust and adaptable solution for clinical trial randomization.
  • The tool enhances data management and trial integrity through customizable features.
  • RandoWeb's innovative approach to randomization supports efficient and reliable clinical trial conduct.