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Experimental Study Designs and Blinding in Research

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Questions and Answers

What is the purpose of an experimental study design?

To provide scientific proof of the etiological factors/risk factors

To manipulate one or more factors to study the effects

To determine the cause and/or effect of a particular factor (correct)

To provide evidence of the effects of a certain factor

What is an example of an experimental study design?

Clinical trial (correct)

Field trial

Community trial

Observational study

What does blinding represent in randomized controlled trials?

That the doctor and the statistician are unaware of the group allocation

That only the principal investigator is aware of the group allocation and the treatment allocation

That the participants are unaware of the group allocation (correct)

That the principal investigator is unaware of the group allocation

What is triple-blindness?

<p>That the doctor and the statistician are unaware of the group allocation</p> Signup and view all the answers

What type of research uses controlled experiments to determine the cause and/or effect of a particular factor?

<p>Experimental study design</p> Signup and view all the answers

Study Notes

An experimental study design is a type of research that uses controlled experiments to determine the cause and/or eﬀect of a particular factor.
In an experimental study, the investigator takes direct action to manipulate one or more factors in order to study the eﬀects.
There are three types of experimental study designs: clinical trial, field trial, and community trial.
The aim of experimental study designs is to provide scientific proof of the etiological factors/risk factors.
Blinding represents an important, distinct aspect of randomized controlled trials.
Triple-blindness means that all participants, the doctor and the statistician are unaware of the group allocation.
Only the principal investigator is aware of the group allocation and the treatment allocation.

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Description

Test your knowledge of experimental study designs and blinding in research with this quiz. Learn about the different types of experimental study designs, their aims, and the significance of blinding in randomized controlled trials.