Fig. 3

Timeline of the first sub-study. Participants will be opted in as a representative sub-sample from the main study equally distributed over the study groups. Several residential activity sensors will be installed in the home of the participant and the participant will receive training regarding the devices. During the 4-week data collection, participants will use the DREEM device each night. After 2 weeks, a phone call will be made to evaluate the device usage and to check for adverse events. After 4 weeks, the devices will be de-installed at home