Supporting Weight Management during COVID-19 (SWiM-C): twelve-month follow-up of a randomised controlled trial of a web-based, ACT-based, guided self-help intervention.

"Competing interests RAJ, FW, JW, MS, SJS and JB report no conflicts of interest. AJH has consulted for Slimming World. CAH reports payment or honoraria from Ethicon, NovoNordisk and International Medical Press for lectures, presentations, speakers bureaus, manuscript writing or educational events. JM and RR are Trustees for the Association of the Study of Obesity (unpaid roles). ALA and SJG are the chief investigators on two publicly funded (MRC, NIHR) trials where the intervention is provided by WW (formerly Weight Watchers) at no cost outside the submitted work. ALA is a member of the Scientific Advisory Board for WW."

"Funding This work was supported by the Medical Research Council [grant number MC_UU_00006/6], the National Institute for Health Research (NIHR) under its Programme Grants for Applied Research Programme (RP-PG-0216-20010), and by the European Association for the Study of Obesity (EASO). The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care. The University of Cambridge has received salary support in respect of SJG from the NHS in the East of England through the Clinical Academic Reserve. The funders had no role in study design, collection, analysis, interpretation of data, or writing of the report."

"Trial registration number ISRCTN 12107048"