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. 2024 Feb 15;13:e49549. doi: 10.2196/49549

Table 2.

Study assessments and time points stage 4.

Data Collection (n=50) Baseline Week


1 2 3 4 (~1 mo) 5 6 7 8 (~2 mo) 9 10 11 12 (~3 mo)
Data for the research database REDCapa

Informed consent












Demographic datab












EORTC QLQ-C30c










SES6Gd









heiQe











HADSf











SGPALSg









SUS-DKh












Open-source web analytic platform Matomo Analytics 3.0i








PROj data through the app

Electronic patient-reported PRO questionnaires on symptoms Bone@BC (everyday)k
Semistructured interviews











aREDCap: Research Electronic Data Capture.

bDemographic data (eg, marital status, family status, educational level, and occupation).

cEORTC QLQ-C30: European Organization for Research and Treatment of Cancer Quality of Life C30.

dSES6G: Self-Efficacy for Managing Chronic Disease 6-Item Scale.

eheiQ: Health Education Impact Questionnaire.

fHADS: Hospital Anxiety and Depression Scale.

gSGPALS: Saltin-Grimby Physical Activity Level Scale.

hSUS-DK: System Usability Scale–Danish version.

iOpen-source web analytic platform Matomo Analytics.

jPRO: patient-reported outcome.

kPatient-reported outcomes from the app on the questions provided daily on health-related quality of life, late side-effects, symptoms and concerns perspectives, and level of physical activity in the Bone@BC app and question prompt list. Items developed in stage 3 and implemented from the European Organization for Research and Treatment of Quality of Life Item Library in the domains of late side-effects and symptoms management.