Study design
CMD
The study took place in Region Västra Götaland, a county council of considerable size, encompassing nearly 20% of the Swedish population, with 200 public and private primary health care centres (PHCCs). The study was conducted at the Institute of Stress Medicine (ISM), Region Västra Götaland, and the Department of Work Science and Sociology, University of Gothenburg. PRIMA is part of the New Ways research programme, which is aimed at the identification and treatment of CMD and to provide support for persons with CMD so that they can continue to work, at the Section for Social Medicine and Public Health, Sahlgrenska Academy, University of Gothenburg. The study was registered on 16/01/2017 (ClinicalTrials.gov, NCT03022760).