2.5. Follow-Up and Outcome Measures
In order to assess the effect of the app (‘feedback’ e-12HR), follow-up was carried out at week one (baseline), week two, week three and week four of monitoring.Main result variable: the change in the AMD score at weeks two, three and four of monitoring.Secondary result variables: the personal information variables, and the answers to the usability rating questionnaire for e-12HR (see 