Now with twenty five percent more entries, double the number of illustrations, and an updated and extensive bibliography, this Second Edition of the seminal Clinical Trials Dictionary goes well beyond general medical dictionaries in representing the large and complex vocabulary needed to describe the methods and results of clinical trials. It provides a thorough index to the entries of its main section—facilitating the findings of terms associated with particular concepts and practical steps in trials; over 300 new "usage notes"; and biographical notes on prominent historical personalities and institutions.