Randomized Controlled Trial (RCT)

A Clinical Research Randomized Controlled Trial (RCT) is an experimental scientific study design in which participants are randomly assigned into different study groups, usually:

• Intervention/Treatment Group
• Control/Placebo Group

The primary aim of an RCT is to evaluate:

• Efficacy
• Safety
• Clinical outcomes
• Side effects
• Superiority or non-inferiority of interventions

Randomization helps minimize:

• Selection bias
• Confounding factors
• Systematic errors

RCTs are considered among the highest levels of evidence in evidence-based medicine because they provide strong methodological rigor and reliable causal inference.

Importance of RCTs

RCTs are highly important because they:

1. Provide strong scientific evidence
2. Improve evidence-based medicine
3. Reduce methodological bias