Stroke. 40(3):672-673, MARCH 2009 DOI: 10.1161/STROKEAHA.108.532051 , PMID: 19164784 Issn Print: 0039-2499 Publication Date: March 2009 Print Are Unadjusted Analyses of Clinical Trials Inappropriately Biased Toward the Null? David Kent;Thomas Trikalinos;Michael Hill; + Author Information From the Center for Predictive Medicine Research (D.M.K., T.A.T.), the Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, Mass; and Foothills Hospital (M.D.H.), University of Calgary, Calgary, AB, Canada. Checking for direct PDF access through Ovid Abstract Abstract unavailable for this article.