Is the randomised controlled trial the best?

William Edridge


Different study formats are preferred for different research objectives. Randomised controlled trials (RCTs) have a greater ability to test efficacy than other methods, but RCTs can have many limitations. These limitations should be explored, assessed and exposed.

Author's affiliations

William Edridge, Editor

Full Text



Randomised controlled trial; Variable; Outcome; Meta analysis; Case-controlled trial; Bias; Analysis; Post-marketing surveillance

Cite this article

South African Journal of Obstetrics and Gynaecology 2014;20(3):74-75. DOI:10.7196/sajog.943

Article History

Date submitted: 2014-10-13
Date published: 2014-10-23

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