{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T14:55:50Z","timestamp":1791384950987,"version":"4.3.3"},"reference-count":37,"publisher":"Springer Science and Business Media LLC","issue":"10","license":[{"start":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T00:00:00Z","timestamp":1790035200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T00:00:00Z","timestamp":1790035200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["OBES SURG"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Hospital procedural volume is recognised as an important determinant of outcomes in complex surgery. However, the volume\u2013outcome relationship in bariatric surgery remains incompletely defined. This study examined the association between hospital procedural volume and major complications in primary metabolic bariatric surgery using the United Kingdom (UK) National Bariatric Surgery Registry (NBSR).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Prospectively collected NBSR data from 2014 to 2023 were analysed. Adults undergoing RYGB, SG, or OAGB were included. Hospitals were stratified into quartiles using a four-year moving average of annual procedural volume. Primary outcomes were major postoperative complications, including gastrojejunal obstruction, bleeding, and Clavien-Dindo grade\u2009\u2265\u2009III events. Multivariable logistic regression assessed associations between hospital volume and outcomes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 54,195 patients were included (RYGB: 23,139; SG: 25,300; OAGB: 4,744). Complication rates were low overall. For RYGB, obstruction rates declined with increasing hospital volume (0.8% in quartile I vs. 0.2% in quartile IV;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). Higher volume independently predicted lower risk of obstruction (OR 0.31, 95% CI 0.16\u20130.58;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001) and Clavien-Dindo\u2009\u2265\u2009III complications (OR 0.71, 95% CI 0.51\u20130.99;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.044). No significant associations between volume and outcomes were observed for SG or OAGB.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Higher hospital volume was associated with fewer severe complications following RYGB, although complication rates remained low across all volume quartiles. Outcomes for SG and OAGB were consistently favourable across all volume quartiles, indicating a lesser influence of hospital volume. These findings support continued evaluation of minimum volume standards within bariatric accreditation frameworks.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s11695-026-08946-1","type":"journal-article","created":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T12:44:37Z","timestamp":1790081077000},"page":"5027-5036","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Impact of Hospital Volume on Bariatric Surgery Safety: A Population-Based Study using Data from the National Bariatric Surgery Registry of the United Kingdom"],"prefix":"10.1007","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-2324-0001","authenticated-orcid":false,"given":"Stergios","family":"Bobotis","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bibek","family":"Das","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henry","family":"Robb","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1238-6524","authenticated-orcid":false,"given":"Chetan","family":"Parmar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasser","family":"Abdul Aal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nour","family":"El Ghazal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1668-0672","authenticated-orcid":false,"given":"Hutan","family":"Ashrafian","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Omar","family":"M. 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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations.","order":1,"name":"Ethics","label":"Transparency","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Dr. Stergios Bobotis, Mr. Henry Robb, Mr. Ioannis Karniadakis, Dr. Bibek Das, Dr. Omar M. Ghanem, Ms. Emma McGlonne, Professor Omar Khan, and Mr. Matyas Fehervari have no conflicts of interest or financial ties to disclose. The NBSR Committee and all further collaborators involved in this work have no conflicts of interest or financial ties to disclose.","order":2,"name":"Ethics","label":"Disclosures","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare no competing interests.","order":3,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}}]}}