ArticleObesity surgery2023
Weight Reduction Percentile Charts: 2-Year Follow-up Results of OAGB and RYGB Post Bariatric Surgery.
Article in Obesity surgery, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Recent Advances in Metabolic and Bariatric Surgery: A Narrative Review of Therapeutic Strategies for Weight Loss and Metabolic Health.Diabetes, metabolic syndrome and obesity : targets and therapy · 2026Review
- Early prediction of suboptimal clinical response after bariatric surgery using total weight loss percentiles.Scientific reports · 2025Article
- Cancer incidence following bariatric surgery in renal transplant recipients: a retrospective multi-center analysis.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2024Article
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Authors and funding
8 authors.
Funding
Abstract
purposeUsing a single percentile chart provides us with high standards for the evaluation and accurate investigation of sufficient weight loss after bariatric surgery, counseling, and treating patients in an evidence-based way. Creating percentile charts of weight loss for gastric bypass is the aim of this study. MATERIALS AND
methodsThis retrospective study was based on data from patients who underwent RYGB or OAGB from February 2008 to February 2020. The lambda-mu-sigma (LMS) method was used to estimate the reduction in body mass index (BMI) and six other metrics measured throughout post-operative follow-up. Percentile charts for various metrics have been presented for the first 2 years' post-surgery. We applied a bootstrap sampling method to evaluate percentile validity.
resultsWe recruited 2579 and 1943 patients who underwent OAGB (75% female) and RYGB (84% female) and were between the ages of 18 and 70 years. The preoperative BMI of patients in the OAGB group was higher than in the RYGB group. Concerning RYGB weight reduction results, the maximum percentage of excess weight loss (%EWL) occurs 18 months after surgery and is steady at 24 months. Far above 50%, EWL is achieved after 6 months. OAGB weight loss follows the same trend as RYGB; at 6 months, the %EWL values are slightly higher than RYGB.
conclusionsWe present the first bariatric weight loss percentile chart for OAGB. It allows evaluation of sufficient and insufficient weight loss at any post-operative point in a visual aspect. Furthermore, it predicts prospective outcomes and guides patient monitoring.
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