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Underpowered clinical trials: Time for a change

van Kleef, Maarten1,*; Kessels, Alfons G.H.2

doi: 10.1016/j.pain.2009.07.033
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1Maastricht University Medical Centre, Department of Anesthesiology and Pain Management, Mail Box 5800, 6202 AZ Maastricht, The Netherlands

2Maastricht University Medical Centre, Department of Clinical Epidemiology and Medical, Technology Assessment, The Netherlands

*Tel.: +31 43 3877458.

E-mail: Maarten.van.kleef@mumc.nl

© 2009 Lippincott Williams & Wilkins, Inc.
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