Table 3.

Push notifications

Preoperative day	Notification
−21	Information about nutrition
−20	Information about smoking
−16	Information about preparation before surgery
−8	Instructions to wear the activity tracker
−2	No alcohol 24 h before surgery
−1	Instructions to drink the pre-operative nutrition drink (4x)
0	Instructions to drink the pre-operative nutrition drink (1x)
Postoperative day	Notification
0	Instructions to wear the activity tracker
1,2,3,..,day of discharge	information of daily goals
1,2,3,..,day of discharge	Information on progress of daily activity
1,2,3,..,day of discharge	Check progress to discharge in the overview of ‘completion of goals’