Coulman KD et al (2016) A Core Outcome Set for the Benefits and Adverse Events of Bariatric and Metabolic Surgery: The BARIACT Project, PLOS Medicine,13(11): e1002187. doi:10.1371/journal.pmed.1002187

Coulman KD et al (2016) A Comparison of Health Professionals' and Patients' Views of the Importance of Outcomes of Bariatric Surgery. Obesity Surgery, 26:2738–2746 DOI 10.1007/s11695-016-2186-0

Hopkins J et al (2015) What are important outcomes of bariatric surgery? An in-depth analysis to inform the development of a core outcome set and a comparison between the views of surgeons and other health professionals (the BARIACT study). Lancet26;385 Suppl 1:S43.

Blencowe NS et al (2015) Systematic review of intervention design and delivery in pragmatic and explanatory surgical randomized clinical trials. Br J Surg, 102: 1037–1047.

Rogers CA et al (2014) The By-Band study: gastric bypass or adjustable gastric band surgery to treat morbid obesity: study protocol for a multi-centre randomised controlled trial with an internal pilot phase. Trials, 15(53).

Rogers CA et al (2017) Adaptation of the By-Band randomized clinical trial to By-Band-Sleeve to include a new intervention and maintain relevance of the study to practice. Br J Surg, 104(9): 1207–1214. doi: 10.1002/bjs.10562

Blazeby JM et al (2014) What is the most effective operation for adults with severe and complex obesity? BMJ; 348:g1763.

Hopkins JC et al (2014) Outcome reporting in bariatric surgery: an in-depth analysis to inform the development of a core outcome set, the BARIACT Study. Obesity Reviews, 16(1).

Welbourn R and Blazeby JM  14.04.2014 PULSE Magazine. Consultant bariatric surgeon Mr Richard Welbourn answers questions from GP Dr Martin Shields on criteria for bariatric surgery, long-term problems post-surgery and common post-operative medication.

Newsletters and Posters 

Patient newsletter Issue 1, April 2104

Patient newsletter Issue 2, December 2015

Patient newsletter Issue 3, August 2016

Patient newsletter Issue 4, June 2017

Newsletter for IFSO and AUGIS August 2017 - Study design, study progress and stories from BBS PIs.

Poster for IFSO August 2017 - Standardising surgical interventions in large scale RCTs: The By-Band-Sleeve Study.


In January 2016 the By-Band-Sleeve study was selected by the National Institute for Health Research (NIHR) as part of their BIG Challenge campaign to highlight studies which are involved in obesity-related research, from the perspective of the patient and the researchers.

Summary of findings from the core outcome set (COS) study

COS study summary, Coulman KD et al, May 2017