The development process is divided into three phases. Phase I and II modules are in an early stage of development. From completed Phase III onwards, modules are available for use.
Modules that have completed Phase III are available for general use, but although they have been carefully developed and tested for acceptability with patients, they have not undergone psychometric testing in a large international group of patients.
Therefore the suggested subscales for those modules are hypothetical and may change after psychometric analysis. Users are advised to perform psychometric analysis of their data prior to undertaking the analysis of their main study data. Validated modules have undergone formal psychometric testing in a large international group of patients and their subscale structure has been confirmed. They can be used in clinical trials and other studies without the need for extensive psychometric analysis. Nevertheless, it is advisable to run some basic psychometric analyses (e.g., calculating Cronbach's alpha coefficients) to ensure that the questionnaire is performing as expected in any specific research setting.
If you would like to use these modules please contact Mélodie Cherton for academic use and for studies carried out by a commercial sponsor or if your study is being wholly or partially sponsored (funded, organized, initiated, managed or run) by the pharmaceutical industry, please contact Christopher Courtois.
MODULES THAT HAVE COMPLETED PHASE III
Click on the module for further information