Table 2

System-internal data

GeneralEmail address
Day of registration+day of completion health insurance company
User behaviourDate/time at which a video was viewed
Active use of expert chat
Active use of forum
Documented dataActivity level <30 min, 30–60 min, >60 min
Pedometer—manual or automatic synchronisation?
Number of steps per day
Number of activity minutes reached per day
Activities selected on a given day