Given the exclusions in our sample population (under 45 years), the AE rate reported by patients of 7% is similar to the approximately 10% rate reported in the general population by retrospective medical record reviews. AE data that include patient experience may provide contextual information currently missing. Capturing and using patient experience data more effectively is critical; there may be opportunities for applying co-design methodology to improve the management of AEs and be more responsive to patients' concerns.