These terms are common in clinical trials and are used to make sure the results are unbiased and trustworthy.

What Is a Placebo?

A placebo is a substance that looks like the real treatment but has no active ingredients. It is used to compare results fairly. For example, if a new pill is being tested, some participants may get the real medicine while others get a placebo. This helps researchers see whether the treatment actually works better than doing nothing.

It’s important to note that not all trials use a placebo. Many trials compare a new drug to an existing, standard treatment, helping to identify improvements in medical care.

What Is Randomization?

Randomization means assigning participants to different groups by chance, like flipping a coin. This helps avoid bias. For example, some people may be randomly assigned to the treatment group, while others go to the placebo or comparison group. This makes the study more fair and scientific.

What Does Blinded Mean?

In a blinded trial, participants do not know which group they are in. Sometimes even the doctors and researchers don’t know either, this is called a double-blind trial. Blinding helps prevent expectations from affecting results. It’s a way to keep the study honest.