Development of the Comprehensive Drug Withdrawal Scale

This technical report outlines the development of the Subject-Rated Comprehensive Drug Withdrawal Scale (CDWS), aimed at evaluating the physical dependence potential of investigational drugs in clinical trials. The report begins by stating the objective of creating a comprehensive, subject-rated scale that can be frequently administered to assess signs and symptoms of physical dependence and withdrawal. It details the methodology, including a literature review that identified 62 unique withdrawal symptoms across various drug classes. The report emphasizes the limitations of existing clinician-rated scales, which are often impractical for frequent assessments. The CDWS is designed to be self-reported, allowing for daily evaluations of withdrawal symptoms. The report also discusses the use of readability measures to ensure comprehension for a wide range of patients. Ongoing validation of the scale is mentioned, aiming to enhance its reliability and applicability in clinical settings. The report concludes by highlighting the necessity for such a tool in drug development and clinical practice.