What Are the Reasons That Randomized Controlled Studies Are Higher

Multiple Choice

What are the reasons that randomized controlled studies are higher than cohort studies in the evidence-based pyramid? Select all that apply.

A) Randomized controlled studies are unfiltered information.
B) Randomized controlled studies involve two groups.
C) Randomized controlled studies use a control group.
D) Randomized controlled studies have a treatment as part of the design.