The idea of placebo-controlled drug trials and the advent of test statistics during the first part of this century were the major milestones in the establishment of a convincing methodology for demonstrating the efficacy of treatments. The first tricyclic and neuroleptic drugs were tested for their efficacy in psychiatric disorders along the lines of these methodological developments, but subsequent trials with psychotropic drugs did not adhere to these principles to the same extent because it became difficult to justify placebo-controlled trials once effective treatments had been...
The idea of placebo-controlled drug trials and the advent of test statistics during the first part of this century were the major milestones in the es...
