The expanded prostate cancer index composite short form (EPIC-26) for measuring health-related quality of life: content analysis of patients' spontaneous comments written in survey margins.
Anna-Maija TalvitieHanna OjalaTeuvo L J TammelaIlkka PietiläPublished in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2021)
Patients are mainly willing to report their symptoms, but a lack of suitable answer options causes missing data and differing answering strategies in the sexual and urinary domains of EPIC-26, weakening the quality of the response data received.