{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T03:20:19Z","timestamp":1787973619063,"version":"build-2784847793"},"reference-count":32,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2023,2,21]],"date-time":"2023-02-21T00:00:00Z","timestamp":1676937600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Obesity"],"published-print":{"date-parts":[[2023,6]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>Baseline demographic characteristics and operations undertaken for patients having bariatric surgery in the United Kingdom are largely unknown. This study aimed to describe the profile of patients having primary bariatric surgery in the National Health Service (NHS) or by self\u2010pay, and associated operations performed for both pathways. The National Bariatric Surgery Registry dataset for 5\u2009years between January 2015 and December 2019 was used. 34\u2009580 patients underwent primary bariatric surgery, of which 75.9% were NHS patients. Mean patient age and initial body mass index were significantly higher for NHS compared to self\u2010pay patients (mean age 45.8\u2009\u00b1\u200911.3 [SD] vs. 43.0\u2009\u00b1\u200912.0\u2009years and initial body mass index 48.0\u2009\u00b1\u20097.9 vs. 42.9\u2009\u00b1\u20097.3\u00a0kg\/m<jats:sup>2<\/jats:sup>, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). NHS patients were more likely to have obesity\u2010related complications\u00a0compared\u00a0to\u00a0self\u2010pay\u00a0patients: prevalence of Type 2 diabetes mellitus 27.7% versus 8.3%, hypertension 37.1% versus 20.1%, obstructive sleep apnoea 27.4% versus 8.9%, severely impaired functional status 19.3% versus 13.9%, musculoskeletal pain 32.5% versus 20.1% and being on medication for depression 31.0% versus 25.9%,\u00a0respectively\u00a0(all <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). Gastric bypass was the most commonly performed primary NHS bariatric operation 57.2%, but sleeve gastrectomy predominated in self\u2010pay patients 48.7% (both <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). In contrast to self\u2010pay patients, NHS patients are receiving bariatric surgery only once they are older and at a much more advanced stage of obesity\u2010related disease complications.<\/jats:p>","DOI":"10.1111\/cob.12585","type":"journal-article","created":{"date-parts":[[2023,2,21]],"date-time":"2023-02-21T11:36:56Z","timestamp":1676979416000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Clinical characteristics of patients undergoing primary bariatric surgery in the United Kingdom based on the National Bariatric Surgery Registry"],"prefix":"10.1111","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6190-5677","authenticated-orcid":false,"given":"Roel","family":"Bolckmans","sequence":"first","affiliation":[{"name":"Department of Upper Gastrointestinal and Bariatric Surgery Musgrove Park Hospital  Taunton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alan","family":"Askari","sequence":"additional","affiliation":[{"name":"East of England Deanery  UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Currie","sequence":"additional","affiliation":[{"name":"Department of Upper Gastrointestinal and Bariatric Surgery Musgrove Park Hospital  Taunton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed R.","family":"Ahmed","sequence":"additional","affiliation":[{"name":"Department of Surgery and Cancer Imperial College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rachel L.","family":"Batterham","sequence":"additional","affiliation":[{"name":"Department of Medicine, Centre for Obesity Research University College London  London UK"},{"name":"National Institute of Health Research University College London Hospitals Biomedical Research Centre  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Byrne","sequence":"additional","affiliation":[{"name":"University Hospital Southampton  Southampton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Hopkins","sequence":"additional","affiliation":[{"name":"Department of Bariatric and Metabolic Surgery North Bristol NHS Trust, Southmead Hospital  Bristol UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Omar A.","family":"Khan","sequence":"additional","affiliation":[{"name":"Population Health Research Institute, St George's Hospital University of London  London UK"},{"name":"Department Upper Gastrointestinal and Bariatric Surgery St George's Hospital  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kamal","family":"Mahawar","sequence":"additional","affiliation":[{"name":"Department of General Surgery Sunderland Royal Hospital  Sunderland UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander Dimitri","family":"Miras","sequence":"additional","affiliation":[{"name":"School of Medicine Ulster University  Belfast UK"},{"name":"Department of Metabolism, Digestion and Reproduction Imperial College London  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chris M.","family":"Pring","sequence":"additional","affiliation":[{"name":"Department of Upper Gastrointestinal and Bariatric Surgery University Hospitals Sussex (St Richard's Hospital)  Chichester UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter K.","family":"Small","sequence":"additional","affiliation":[{"name":"Department of General Surgery Sunderland Royal Hospital  Sunderland UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8228-526X","authenticated-orcid":false,"given":"Richard","family":"Welbourn","sequence":"additional","affiliation":[{"name":"Department of Upper Gastrointestinal and Bariatric Surgery Musgrove Park Hospital  Taunton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,2,21]]},"reference":[{"key":"e_1_2_8_2_1","unstructured":"Health Survey for England.Estimated number of adults who are morbidly obese in England [Internet]. 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