Participants
Invitation to PCCs to participate in a RCT started in September 2017, and 30 PCCs in the Västra Götaland Region with an established organisation consisting of a care manager and affiliated rehabilitation coordinator were invited via the regional primary care R&D support organisation to take part in the CO-WORK-CARE study. Of the invited 30 PCCs, 28 (93%) PCCs accepted the invitation. All PCCs were informed about the trial both via information visits to every PCC before study start and by written confirmation which was obtained from every PCC, both intervention and control PCCs. All PCCs participated in educational activities concerning study protocol (Flow chart for the CO-WORK-CARE trial. Inclusion of primary care centres (PCCs) (upper part) and inclusion of patients, subdivided by intervention and control identification of primary care centres (lower part). RCT, randomised controlled trial.