Evidence map›Paper›PMID 31416073›Full record

ArticleObesity facts2019

Predictors of Risk and Success of Obesity Surgery.

Felix Nickel, Javier R de la Garza, Fabian S Werthmann, Laura Benner, Christian Tapking, Emir Karadza, Anna-Laura Wekerle, Adrian T Billeter, Hannes G Kenngott, Lars Fischer and 1 more

Open access · goldAbstract read
In one paragraph

Article in Obesity facts, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 4 pooled it
11.5field-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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

49 citing papers in PubMed, 4 syntheses or guidelines pooled it, 88 citations in OpenAlex.

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  9. Relations between trajectories of weight loss and changes in psychological health over a period of 2 years following bariatric metabolic surgery.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
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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

11 authors at 2 institutions in 1 country.

Felix NickelDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Javier R de la GarzaDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Fabian S WerthmannDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Laura BennerInstitute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany.
Christian TapkingDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Emir KaradzaDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Anna-Laura WekerleDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Adrian T BilleterDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Hannes G KenngottDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Lars FischerDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Beat Peter Müller-StichDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany, Beatpeter.Mueller@med.uni-heidelberg.de.
Heidelberg University · DEZimmer Biomet (Germany) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObesity surgery has proven successful for weight loss and the resolution of comorbidities. There is, however, little evidence on its success and the risk of complications when considering age of onset of obesity (AOO), years of obesity (YOO), preoperative body mass index (BMI), Edmonton obesity staging system (EOSS) score, and age as possible predictors of weight loss, the resolution of comorbidities, and the risk of complications.

methodsPatients who underwent Roux-en-Y gastric bypass (RYGB) and laparoscopic sleeve gastrectomy (LSG) from a prospective database were analyzed. Multiple regression analyses were used to predict comorbidities and their resolution, percentage excess weight loss (%EWL) and total weight loss (%TWL) 12 months after surgery, and the risk of complications using the predictors AOO, YOO, age, EOSS, and BMI.

results180 patients aged 46.8 ± 11.1 years with a preoperative BMI 49.5 ± 7.5 were included. The number of preoperative comorbidities was higher with older age (β = 0.054; p = 0.023) and a greater BMI (β = 0.040; p = 0.036) but was not related to AOO and YOO. Patients with AOO as a child or adolescent were more likely to have an EOSS score of ≥2. Greater preoperative BMI was negatively associated with %EWL (β = -1.236; p < 0.001) and older age was negatively associated with %TWL (β = -0.344; p = 0.020). Postoperative complications were positively associated with EOSS score (odds ratio [OR] 1.147; p = 0.042) and BMI (OR 1.010; p = 0.020), but not with age. AOO and YOO were not related to postoperative outcome.

conclusionGreater BMI was associated with a lower %EWL and age was associated with a low %TWL. YOO and AOO did not influence outcome. Age, BMI, and EOSS score were the most important predictors for risk and success after obesity surgery. Surgery should be performed early enough for optimal outcomes.

Indexed as

AdolescentAdultAgedAge of OnsetBariatric SurgeryBody Mass IndexChildFemaleGastrectomyGastric BypassHumansLaparoscopyMaleMiddle AgedObesity, MorbidPostoperative ComplicationsAge of onset of obesityComorbiditiesExcess weight lossRisk of complicationsYears of obesity

Identifiers

PMID31416073
PMCPMC6758709
OpenAlexW2967006290

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.