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How Questionnaires Work

> Selecting A Questionnaire

There are many considerations to make when selecting a questionnaire. Some of the major ones include the purpose of the study, the patient-reported endpoint required to address the study purpose, the content of the items in the questionnaire with regard to the study purpose, and the validity of the questionnaire being considered. No single questionnaire is right for all studies. Some studies are best served by general, or generic health status assessments. Others are better served with targeted assessments that focus on specific disease symptoms or treatment effects. Population based studies aiming to characterize a cohort of patients in a broader context tend to benefit most from generic assessment using well-validated benchmark instruments and their established norms. Clinical trials, often asking questions relating to a specific symptom improvement or side-effect reduction, tend to benefit from targeted assessment.


There are several other important considerations when planning a research or clinical study, such as reproducibility, extent of validity required, responsiveness to change, length of assessment, administration timing and instructions, handling of patients with special needs, and missing data considerations in longitudinal studies.


The FACIT Measurement provides both generic and targeted assessments as well as brief symptom indices.