Abstract
BACKGROUND/AIM: Patients irradiated for breast cancer may experience acute skin toxicity. To reduce this risk, a mobile application was created which reminds patients to carry out skin care. Before using this app in patients, a pre-study evaluating its usability in healthy volunteers was required. PATIENTS AND METHODS: In this prospective study, 30 healthy volunteers from Germany and Denmark were asked to test the app and complete a questionnaire including ten statements ("yes or "no") in three sections. RESULTS: Satisfaction rates (statements affirmed with "yes") were 66.7% (18/27 participants) and 78.6% (22/28) in the section "download and installation", and 100% (29/29) and 96.7% (29/30) in the section "navigation". In the section "content/functions", the six statements were addressed by 28-30 participants; satisfaction rates were 86.7% to 100% (median 96.5%). Dichotomous responses were supplemented by individual comments. CONCLUSION: This study revealed that the reminder app needed improvement before tested in patients and demonstrated the importance of a pre-study in healthy volunteers.