Participants in the Women's Health Initiative study were given either hormone replacement pills or a placebo.Postmenopausal women were followed over time and the researchers discovered that women taking the pills were more at risk for heart disease.As a result, the study was stopped before completion.This was an example of:

Question

Quizplus · Accepted Answer

The Women's Health Initiative study was a randomized controlled trial because participants were randomly assigned to either the hormone replacement pills or a placebo group, allowing for controlled comparison of outcomes.

Participants in the Women's Health Initiative Study Were Given Either