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Despite evidence of short-term efficacy, long-term outcomes remain understudied.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This PRISMA-compliant systematic review and meta-analysis evaluated long-term (\u2265\u20095\u00a0years) outcomes of OAGB as primary and revisional procedures. Quality assessment and bias evaluation were conducted systematically.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Analysis included 32 studies with 19,125 patients (76% primary OAGB) from 14 countries with mean follow-up of 6.7\u00a0years. At five years, mean excess weight loss(EWL) was 75%, increasing to 77% beyond five years. Obesity associated diseases resolution was substantial: type 2 diabetes (80%), obstructive sleep apnea (89%), and hypertension (61%). Complications were minimal: bile reflux (4%), marginal ulceration (2%), and malnutrition (1%). For revisional OAGB, %EWL at five years was 71%. The conversion rate to other bariatric procedures (all RYGB) was reported in 3% of patients following OAGB.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This analysis demonstrates OAGB's effectiveness for sustained weight loss and obesity associated diseases improvement at\u2009\u2265\u20095\u00a0years, supporting its role in long-term obesity management as a primary and revisional bariatric intervention.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s11695-025-08339-w","type":"journal-article","created":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T15:15:00Z","timestamp":1760541300000},"page":"71-87","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Long-Term Outcomes of One Anastomosis Gastric Bypass: A Systematic Review and Meta-Analysis of 5-Year and Beyond"],"prefix":"10.1007","volume":"36","author":[{"given":"Anuja","family":"Mitra","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amit","family":"Bhambri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matyas","family":"Fehervari","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chetan","family":"Parmar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,10,15]]},"reference":[{"key":"8339_CR1","doi-asserted-by":"publisher","first-page":"38","DOI":"10.1016\/j.ijsu.2018.10.042","volume":"61","author":"R Rutledge","year":"2019","unstructured":"Rutledge R, Kular K, Manchanda N. 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