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Chapter 1: Q3-2BSC (page 1)

Blinding What does it mean when we say that the study cited in Exercise 1 was 鈥渄ouble blind鈥�?

Short Answer

Expert verified

Double blind means neither the patients nor the doctors were aware of the treatment given to each of the patients.

Step by step solution

01

Given information

A study is performed to know the effectiveness of paracetamol on pain.

The subjects who are part of the study comprise 1643 patients. They are randomly given one of the three treatments.

02

Meaning of double blind experiment

In a double blind study, none of the people involved in the conduction of the experiment are aware of the treatment provided to any specific subject of the study.

Thus, in a double blind experiment, subjects, the investigators(incorporate treatment), or the assessors (who record responses) are unaware of the treatment provided to the subjects.

03

Step 3:Explanation in the context of back pain study

In the study, the investigators are doctors or other health care providers who help to conduct the experiment. The subjects are patients who have lower back pain.

The number of treatments in the experiment is three.

Thus, in the double blind experiment, both patients and doctors would be unaware of the treatment being provided to the patients.

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