Effects of a Financial Incentive on Health Researchers’ Response to an Online Survey: a Randomized Controlled Trial

Paul M Wilson   ^{1 * †} ;   Mark Petticrew   ^{2 * †} ;   Mike Calnan   ^{3 * †} ;   Irwin Nazareth   ^{4 * †}

¹ Centre for Reviews and Dissemination, University of York, York, United Kingdom

² Public and Environmental Health Research Unit, London School of Hygiene and Tropical Medicine, London, United Kingdom

³ School of Social Policy, Sociology and Social Research, , University of Kent, Canterbury, United Kingdom

⁴ MRC General Practice Research Framework, University College London, London, United Kingdom

*all authors contributed equally