Background/aims: Understanding the influence or impact of epidemiological factors on cancer outcomes in clinical trials can broaden our knowledge of disease, trial populations and therapeutic effects thus leading to improved patient care. However, there is a lack of data on cancer patients' compliance with an epidemiology questionnaire in the context of a clinical trial.
Patients And Methods: Cancer patients were provided with a hypothetical scenario and surveyed regarding their willingness and preferences to complete an epidemiology questionnaire if incorporated into a cancer therapy trial.