Burst 1 of EMA Surveys
GROUP B, EMA
Before burst 1 (baseline), the participants received an email to notify them of the upcoming EMA burst. A second reminder email and one push notification reminder were sent midway through the EMA burst (see the left-hand side of During burst 1, all participants received 42 EMA surveys over 10 days within a 14-day period (see the left-hand side of Overview of general reminders sent before and during each ecological momentary assessment (EMA) burst. Reminder sent via email (E), text message (T), or push notification (P). Group A: 25 Health Points (HP) per completed EMA survey. Group B: 25 HP per completed EMA survey + bonus HP available. Group C: 50 HP per completed EMA survey. Group D: 50 HP per completed EMA survey + bonus HP available. An additional 2 push notifications are sent per EMA survey (first push notification, second push notification 25 min later, if survey remains unanswered).FIG2OV~1.PNGd.Overview of the 14- and 7-day ecological momentary assessment (EMA) schedules. The black dot indicates that an EMA survey was sent on this day in this time window. Surveys were sent at random times within the following time windows: survey 1 (8:30-9:30 AM), survey 2 (11 AM to noon), survey 3 (1:30-2:30 PM), survey 4 (4-5 PM), survey 5 (6:30-7:30 PM), survey 6 (9-10 PM). Burst 1 and 2: all participants (N=384) received the 14-day EMA schedule (burst 1: 42 EMA surveys and burst 2: 41 EMA surveys as survey 6 on day 9 was not sent due to a technical glitch). Burst 3: intervention group participants (n=288) received the 7-day schedule (30 EMA surveys), and control group participants (n=96) received the 14-day schedule (42 EMA surveys).