Fish, RebeccaMacLennan, StevenAlkhaffaf,, BilalWilliamson, Paula R.2021-02-232021-02-232020-12-01Fish, R, MacLennan, S, Alkhaffaf, B & Williamson, P R 2020, '“Vicarious thinking” is a key driver of score change in Delphi surveys for COS development and is facilitated by feedback of results', Journal of Clinical Epidemiology, vol. 128, pp. 118-129. https://doi.org/10.1016/j.jclinepi.2020.09.028 0895-43560895-4356ORCID: /0000-0002-2691-8421/work/90172342https://hdl.handle.net/2164/15913Acknowledgements: We would like to thank and acknowledge the participants in the Delphi surveys used here. We also thank individuals who contributed significantly to the wider COS development projects: Professor Andrew G. Renehan and Professor Caroline Sanders (CORMAC); Dr. Thomas B. L. Lam (COMPACTERS); Professor Iain A Bruce and Professor Jane M Blazeby (GASTROS). Funding: This work was supported by a National Institute for Health Research (NIHR) Senior Investigator Award (NF-SI_0513-10025). The views expressed in this article are those of the authors and not necessarily those of the NIHR, or the Department of Health and Social Care.121069209engSDG 3 - Good Health and Well-beingCore outcome set developmentDelphi surveyconsensusstakeholdersfeedback methodsR MedicineNational Institute for Health Research (NIHR)NF-SI_0513-10025Supplementary DataRJournal article10.1016/j.jclinepi.2020.09.028 0895-4356128