title: Discussion of papers on cost and efficiency of data collection in clinical trials.
authors.affiliation: Biostatistics Research Branch, AIDS Program, National Institute of Allergy and Infectious Diseases, Rockville, Maryland 20892.
authors.forename: S S
authors.initials: SS
authors.lastname: Ellenberg
mesh_terms: D003625:Data Collection / Q000191:economics*; D004526:Efficiency; D011237:Predictive Value of Tests; D016032:Randomized Controlled Trials as Topic / Q000191:economics*; D012107:Research Design; D015983:Selection Bias