Evidence map›Paper›PMID 30293134›Full record

SynthesisObesity surgery2019

Long-Term Outcomes After Bariatric Surgery: a Systematic Review and Meta-analysis of Weight Loss at 10 or More Years for All Bariatric Procedures and a Single-Centre Review of 20-Year Outcomes After Adjustable Gastric Banding.

Paul E O'Brien, Annemarie Hindle, Leah Brennan, Stewart Skinner, Paul Burton, Andrew Smith, Gary Crosthwaite, Wendy Brown

Registry-linked trialOpen access · hybridAbstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Obesity surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07348146 (Hand-Sewn vs. Stapled Anastomosis in SADI-S), which is not on this map. Cited by 392 papers, 13 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
392citing papers in PubMed, 13 pooled it
50.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07348146 naenrolling by invitationnot on this mapstarted 2025, after this paper: background citation

Hand-Sewn vs. Stapled Anastomosis in SADI-S: A Prospective Randomized Trial of Early Postoperative Complications.

TypeinterventionalSponsorKasr El Aini HospitalRan2025 to 2026Enrolled82ConditionsMetabolic Surgery, Obesity & OverweightArmsHand-sewn Single Anastomosis Duodeno-Ileal Sleeve (SADI-S), Stapled Single Anastomosis Duodena-ileal Sleeve
3 · Its place in the literature

Who cites it

392 citing papers in PubMed, 13 syntheses or guidelines pooled it, 766 citations in OpenAlex.

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  2. Comparing GLP-1 agonists versus other weight loss interventions on risk of atrial fibrillation recurrence after catheter ablation: a meta-analysis.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026
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332 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Paul E O'BrienCentre for Obesity Research and Education, The Alfred Centre, Monash University Clinical School, 99 Commercial Road, Melbourne, 3004, Australia. paul.obrien@monash.edu.ORCID 0000-0003-3348-127X
Annemarie HindleSchool of Behavioural and Health Sciences, Centre for Eating, Weight and Body Image, Australian Catholic University, Melbourne, Australia.
Leah BrennanSchool of Behavioural and Health Sciences, Centre for Eating, Weight and Body Image, Australian Catholic University, Melbourne, Australia.
Stewart SkinnerCentre for Obesity Research and Education, The Alfred Centre, Monash University Clinical School, 99 Commercial Road, Melbourne, 3004, Australia.
Paul BurtonCentre for Obesity Research and Education, The Alfred Centre, Monash University Clinical School, 99 Commercial Road, Melbourne, 3004, Australia.
Andrew SmithCentre for Bariatric Surgery, Melbourne, Australia.
Gary CrosthwaiteCentre for Bariatric Surgery, Melbourne, Australia.
Wendy BrownCentre for Obesity Research and Education, The Alfred Centre, Monash University Clinical School, 99 Commercial Road, Melbourne, 3004, Australia.
The Alfred Hospital · AUAustralian Catholic University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionDurability is a key requirement for the broad acceptance of bariatric surgery. We report on durability at and beyond 10 years with a systematic review and meta-analysis of all reports providing data at 10 or more years and a single-centre study of laparoscopic adjustable gastric banding (LAGB) with 20 years of follow-up.

methodsSystematic review with meta-analysis was performed on all eligble reports containing 10 or more years of follow-up data on weight loss after bariatric surgery. In addition, a prospective cohort study of LAGB patients measuring weight loss and reoperation at up to 20 years is presented.

resultsSystematic review identified 57 datasets of which 33 were eligible for meta-analysis. Weighted means of the percentage of excess weight loss (%EWL) were calculated for all papers included in the systematic review. Eighteen reports of gastric bypass showed a weighted mean of 56.7%EWL, 17 reports of LAGB showed 45.9%EWL, 9 reports of biliopancreatic bypass +/- duodenal switch showed 74.1%EWL and 2 reports of sleeve gastrectomy showed 58.3%EWL. Meta-analyses of eligible studies demonstrated comparable results. Reoperations were common in all groups. At a single centre, 8378 LAGB patients were followed for up to 20 years with an overall follow-up rate of 54%. No surgical deaths occurred. Weight loss at 20 years (N = 35) was 30.1 kg, 48.9%EWL and 22.2% total weight loss (%TWL). Reoperation rate was initially high but reduced markedly with improved band and surgical and aftercare techniques.

conclusionAll current procedures are associated with substantial and durable weight loss. More long-term data are needed for one-anastomosis gastric bypass and sleeve gastrectomy. Reoperation is likely to remain common across all procedures.

Indexed as

Bariatric SurgeryGastroplastyHumansObesity, MorbidReoperationTreatment OutcomeWeight Loss20-year follow-upBariatric surgeryLong termMeta-analysisReoperation ratesWeight loss

Identifiers

PMID30293134
PMCPMC6320354
OpenAlexW2895475782

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.