Aims, outcome measures, study sites and patient sample: EPSILON Study I

BackgroundCross-national research into the care of people with severe mental illnesses is hampered by a lack of standardised measures. The European Psychiatric Services: Inputs Linked to Outcome Domains and Needs (EPSILON) Study is a European Union funded project within the BIOMED-2 programme. The project aims to develop standardised instruments to facilitate future cross-national research.AimsTo describe the aims, outcome measures, study sites and patient samples of the EPSILON Study.Method, results, conclusionsSee companion papers in this supplement.