double blinded study
double blinded studyDouble-masked design Clinical research A clinical trial in which neither the Pt nor the researcher know which arm–eg a gold standard therapy, an experimental, or placebo–of the study the Pt has been placed, preventing, theoretically, Pt or researcher bias. See Bias, Blinding, Triple blinding; Cf Anecdotal.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.