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Statistics Commentary Series: Commentary #5—Can It Work or Does It Work? The Difference Between Efficacy and Effectiveness Trials

Streiner, David L. PhD, CPsych

Journal of Clinical Psychopharmacology: December 2014 - Volume 34 - Issue 6 - p 672–674
doi: 10.1097/JCP.0000000000000223

From the Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton; and Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.

Reprints: David L. Streiner, PhD, CPsych, St Joseph’s Healthcare, Mountain Campus, 100 W 5th Street, Hamilton, Ontario, Canada L8N 3K7 (e-mail:

© 2014 by Lippincott Williams & Wilkins.