Valid and Relevant Outcome Measures Are Critical for Objective Hypothesis-Testing

Brian M. Ilfeld, Thomas W. Wright, Daniel I. Sessler, Terese L. Chmielewski
2008 Anesthesia and Analgesia  
doi:10.1213/ane.0b013e31817b65b2 pmid:18633057 fatcat:hhsgshdzenbxvicxuxlig4ngoy