Abstract

Patients' self-reporting is increasingly considered essential to measure quality-of-life and treatment-related side-effects. However, if multiple patient-reported instruments are used, redundancy may represent an overload for patients.Patient-Reported Outcomes Common Terminology Criteria for Adverse Events (PRO-CTCAE) are a tool allowing direct patients' reporting of side-effects.We tested psychometric properties of a selected list of PRO-CTCAE items, in a cohort of 303 breast cancer patients, using validated instruments for quality of life assessment as anchors.The analysis of convergent validity with HADS (Hospital Anxiety and Depression Scale) and EORTC BR-23 sub-scales, and the analysis of responsiveness with the PGIC (Patients Global Impression of Change) score supported that a selected list of PRO-CTCAE symptoms might represent a standardized, agile tool for both research and practice settings to reduce patient burden without missing relevant information on patient perceptions.Among patients using digital devices, those with a higher education levels required shorter time to fulfil questionnaires.In conclusion, a selected list of PRO-CTCAE items can be considered as a standardized, agile tool for capturing crucial domains of side-effects and quality of life in patients with breast cancer.The study is registered on clinicaltrials.gov (NCT04416672).