A placebo-controlled clinical trial is conducted to assess whether a new antihypertensive drug is more effective than a standard therapy. A total of 500 patients with essential hyp... A placebo-controlled clinical trial is conducted to assess whether a new antihypertensive drug is more effective than a standard therapy. A total of 500 patients with essential hypertension are enrolled and randomly assigned to one of two groups (new drug and placebo). Only the participants do not know which group got the placebo and which got the experimental treatment. This study is best described as which of the following?
Understand the Problem
The question is asking about the classification of a clinical trial. It describes a placebo-controlled trial where participants are assigned to either a drug or a placebo, and specifically mentions that only the participants do not know which group they are in. This seeks to determine how to categorize this kind of trial based on its design.
Answer
Single-blinded, randomized, controlled trial
The study is a single-blinded, randomized, controlled trial.
Answer for screen readers
The study is a single-blinded, randomized, controlled trial.
More Information
In a single-blinded study, only the participants are unaware of the group assignments, helping to prevent bias in their responses.
Tips
A common mistake is confusing single-blinded and double-blinded studies. Double-blinded means both participants and researchers are unaware.
Sources
- Randomized Controlled Trials of Blood Pressure Lowering - AHA Journals - ahajournals.org
- First‐line drugs for hypertension - PMC - pmc.ncbi.nlm.nih.gov
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