, and the circumstances in which, feeding back data from patient-reported outcome measures (PROMs) improved patient care, at the aggregate and individual level. {{author}}{{author}}{{($index < metadata.AuthorsAndEtalArray.length-1) ? ',' : '.'}} Joanne Greenhalgh, Sonia Dalkin, Kate Gooding, Elizabeth Gibbons, Judy Wright, David Meads, Nick Black, Jose Maria Valderas & Ray Pawson. * Detailed Author information * * Detailed Author informationJoanne Greenhalgh 1,*, Sonia Dalkin 2, Kate Gooding 1, Elizabeth Gibbons 3, Judy Wright 1, David Meads 1, Nick Black 4, Jose Maria Valderas 5, Ray Pawson 11 School of Sociology and Social Policy, University of Leeds, Leeds, UK2 Department of Public Health, Northumbria University, Newcastle upon Tyne, UK3 Nuffield Department of Population Health, University of Oxford, Oxford