Related Experiment Video
Updated: Feb 16, 2026
10:28
Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
6.0K
Blinding in trials of interventional procedures is possible and worthwhile
Karolina Wartolowska1,2, David Beard2, Andrew Carr2
1Nuffield Department of Primary Care Health Sciences (NDPCHS), Radcliffe Observatory Quarter, Woodstock Road, Oxford, OX2 6GG, UK.
F1000Research
|February 15, 2018
Summary
Blinding in surgical trials is feasible using clever methods to mask treatments. This enhances trial integrity by reducing bias and improving patient retention in control groups.
Area of Science:
- Medical Research Methodology
- Surgical Trials
- Clinical Trial Design
Background:
- Blinding is crucial in clinical trials to prevent bias.
- Implementing blinding in interventional procedures presents unique challenges.
- Previous reviews highlight the need for effective blinding strategies in surgical trials.
Purpose of the Study:
- To demonstrate the feasibility of blinding in surgical randomized controlled trials (RCTs).
- To provide examples of innovative blinding techniques for interventional procedures.
- To discuss the importance of blinding patients, assessors, and caregivers in RCTs.
Main Methods:
- Review of evidence from earlier systematic reviews of surgical RCTs with placebo arms.
- Analysis of documented strategies for simulating active procedures and indistinguishable placebo controls.
- Discussion of potential biases in interventional trials and the role of blinding in mitigation.
Main Results:
- Blinding in trials involving interventional procedures is demonstrated as feasible.
- Ingenious strategies exist to create effective placebo controls for surgical interventions.
- Blinding effectively minimizes bias and reduces patient dropout in control arms.
Conclusions:
- The implementation of blinding in surgical interventional trials is achievable.
- Effective blinding strategies are essential for maintaining the integrity of surgical RCTs.
- Blinding offers significant benefits, including bias reduction and improved patient adherence.
Related Concept Videos
01:11Blinding
4.0K
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.
4.0K
02:07Blind Procedures
13.7K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
13.7K
01:23Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
488
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,...
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
488