Use of performance feedback to increase healthcare worker hand-hygiene behaviour.

a Department of Psychology, University College London, UK b Academic Department of Geriatric Medicine, Hampstead Site, Royal Free and University College Medical School, UK c Health Services Research Unit, London School of Hygiene and Tropical Medicine, UK d Department of Primary Care and Population Sciences, Hampstead Site, Royal Free and University College Medical School, UK e Modelling and Economics Department, Communicable Disease Surveillance Centre, Health Protection Agency, Colindale, London, UK f Laboratory of HealthCare Associated Infection, Specialist and Reference Microbiology Division, Health Protection Agency, Colindale, London, UK g Division of Healthcare-associated Infection and Antimicrobial Resistance, Communicable Disease Surveillance Centre, Health Protection Agency, Colindale, London, UK h Infection Control, University College Hospital, London, UK Department of Microbiology, Mid Essex Hospitals, Chelmsford, UK