http://archpsyc.jamanetwork.com/ en-us Wed, 19 Dec 2012 00:00:00 GMT Tue, 01 Jan 2013 00:52:56 GMT Silverchair editor@archpsyc.jamanetwork.com webmaster@archpsyc.jamanetwork.com http://archpsyc.jamanetwork.com/article.aspx?articleID=209616 Mon, 01 May 2006 00:00:00 GMT Kraemer H, Mintz J, Noda A, et al. <span class="paragraphSection">Clinical researchers often propose (or review committees demand) pilot studies to determine whether a study is worth performing and to guide power calculations. The most likely outcomes are that (1) studies worth performing are aborted and (2) studies that are not aborted are underpowered. There are many excellent reasons for performing pilot studies. The argument herein is not meant to discourage clinical researchers from performing pilot studies (or review committees from requiring them) but simply to caution against their use for the objective of guiding power calculations.</span> 63 5 484 489 10.1001/archpsyc.63.5.484 http://archpsyc.jamanetwork.com/article.aspx?articleID=209616