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- Blinding (sometimes called masking) is used to try to eliminate such bias. It is a tenet of randomised controlled trials that the treatment allocation for each patient is not revealed until the patient has irrevocably been entered into the trial, to avoid selection bias.
www.bmj.com/content/321/7259/504
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Jul 27, 2012 · There are two concepts that are helpful in deciding which of these is the case. They are: (1) Blind spots – these are the things the method, definitions or theoretical approach does not allow to be seen/said. For example, surveys are very good for answering questions such as how many, and how often.
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- Importance of Blinding
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Blinding means withholding which group each participant has been assigned to. Studies may use single-, double- or triple-blinding. Single-blinding occurs in many different kinds of studies, but double- and triple-blinding are mainly used in medical research.
Blinding helps ensure a study’s internal validity, or the extent to which you can be confident any link you find in your study is a true cause-and-effect relationship. Since non-blinded studies can result in participants modifying their behavior or researchers finding effects that do not really exist, blinding is an important tool to avoid research...
If you want to know more about statistics, methodology, or research bias, make sure to check out some of our other articles with explanations and examples.
In a single-blind study, only the participants are blinded. In a double-blind study, both participants and experimenters are blinded. In a triple-blind study, the assignment is hidden not only from participants and experimenters, but also from the researchers analyzing the data.
- Attrition refers to participants leaving a study. It always happens to some extent—for example, in randomized controlled trials for medical researc...
- Action research is conducted in order to solve a particular issue immediately, while case studies are often conducted over a longer period of time...
- Action research is focused on solving a problem or informing individual and community-based knowledge in a way that impacts teaching, learning, and...
- Action research is particularly popular with educators as a form of systematic inquiry because it prioritizes reflection and bridges the gap betwee...
- A cycle of inquiry is another name for action research . It is usually visualized in a spiral shape following a series of steps, such as “planning...
- To make quantitative observations , you need to use instruments that are capable of measuring the quantity you want to observe. For example, you mi...
- Criterion validity and construct validity are both types of measurement validity . In other words, they both show you how accurately a method measu...
- Convergent validity and discriminant validity are both subtypes of construct validity . Together, they help you evaluate whether a test measures th...
- Convergent validity and discriminant validity are both subtypes of construct validity . Together, they help you evaluate whether a test measures th...
Aug 19, 2000 · In controlled trials the term blinding, and in particular “double blind,” usually refers to keeping study participants, those involved with their management, and those collecting and analysing clinical data unaware of the assigned treatment, so that they should not be influenced by that knowledge.
- Simon J Day, Douglas G Altman
- 2000
Feb 23, 2002 · The term blinding refers to keeping trial participants, investigators (usually health-care providers), or assessors (those collecting outcome data) unaware of the assigned intervention, so that they will not be influenced by that knowledge.
- Kenneth F Schulz, David A Grimes
- 2002
In a single-blind study, only the participants are blinded. In a double-blind study, both participants and experimenters are blinded. In a triple-blind study, the assignment is hidden not only from participants and experimenters, but also from the researchers analysing the data.
Jul 17, 2023 · Blinding or masking refers to the withholding of information regarding treatment allocation from one or more participants in a clinical research study. It is an essential methodological feature of clinical studies that help maximize the validity of the research results.
