Hemming, K.Taljaard, M.McKenzie, J. E.Hooper, R.Copas, A.Thompson, J. A.Dixon-Woods, M.Aldcroft, A.Doussau, A.Grayling, M.Kristunas, C.Goldstein, G. E.Campbell, M. K.Girling, A.Eldridge, S.Campbell, M. J.Lilford, R. J.Weijer, C.Forbes, A.Grimshaw, J. M.2018-11-292018-11-292018-11-09Hemming, K, Taljaard, M, McKenzie, J E, Hooper, R, Copas, A, Thompson, J A, Dixon-Woods, M, Aldcroft, A, Doussau, A, Grayling, M, Kristunas, C, Goldstein, G E, Campbell, M K, Girling, A, Eldridge, S, Campbell, M J, Lilford, R J, Weijer, C, Forbes, A & Grimshaw, J M 2018, 'Reporting of stepped wedge cluster randomised trials : extension of the CONSORT 2010 statement with explanation and elaboration', BMJ, vol. 363, k1614. https://doi.org/10.1136/bmj.k16140959-8146ORCID: /0000-0001-5386-4097/work/91892129http://hdl.handle.net/2164/11539Acknowledgements With acknowledgement to those who participated in the Delphi survey and Peter Chilton who provided administrative support. Funding This research was funded by the Australian National Health and Medical Research Council (NHMRC) project grant (1108283) and also partly funded by the UK NIHR Collaborations for Leadership in Applied Health Research and Care West Midlands initiative. Mary Dixon-Woods is funded by a Wellcome Trust Senior Investigator award WT097899. Jennifer A Thompson is funded by the Medical Research Council Network of Hubs for Trials Methodology Research (MR/L004933/1-P27). Jeremy Grimshaw holds a Canada Research Chair in Health Knowledge Transfer and Uptake. Charles Weijer holds a Canada Research Chair. Joanne E McKenzie holds an NHMRC Australian Public Health Fellowship (1072366). Karla Hemming holds an NIHR Senior Research Fellowship (SRF-2017-002).697855engR Medicine (General)National Institute for Health Research (NIHR)SRF-2017-002Wellcome TrustWT097899Medical Research Council (MRC)MR/L004933/1-P27R1Journal article10.1136/bmj.k1614363