Evidence map›Paper›PMID 26433591›Full record

ArticleObesity surgery2016

Predictors of Excess Weight Loss in Obese Patients After Gastric Bypass: a 60-Month Follow-up.

Anália S Barhouch, Alexandre V Padoin, Daniela S Casagrande, Raquel Chatkin, Samanta P Süssenbach, Milene A Pufal, Carina Rossoni, Cláudio C Mottin

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In one paragraph

Article in Obesity surgery, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
2.4field-weighted citation impact, top 12% 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

31 citing papers in PubMed, 2 syntheses or guidelines pooled it, 51 citations in OpenAlex.

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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

8 authors at 1 institution in 1 country.

Anália S BarhouchCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Alexandre V PadoinCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Daniela S CasagrandeCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Raquel ChatkinCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Samanta P SüssenbachCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Milene A PufalCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Carina RossoniCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil.
Cláudio C MottinCenter of Obesity and Metabolic Syndrome, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul (COM-PUCRS), Av. Ipiranga, 6690/302, 90610-000, Porto Alegre, RS, Brazil. artigos@scientific.com.br.
Pontifícia Universidade Católica do Rio Grande do Sul · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe objective of this study was to analyze the factors associated with change in body mass index (BMI) and with percentage of excess weight loss (%EWL) in patients undergoing Roux-en-Y gastric bypass (RYGB). The following factors were analyzed: sex, age, surgical access (laparotomy vs. laparoscopy), preoperative BMI, waist circumference (WC), type 2 diabetes mellitus (T2DM), high blood pressure, and dyslipidemia.

methodsRetrospective cohort study using a convenience sample of 2070 patients of both sexes, aged 18 to 65 years, undergoing RYGB between 2000 and 2013. The outcomes of interest were BMI and %EWL at 0, 6, 12, 18, 24, 30, 36, 42, 48, 54, and 60 months after RYGB.

resultsAfter 36, 48, and 60 months, approximately 50 % of patients had BMI >30 kg/m(2). As for %EWL, 60-month results were poor for 17 % of patients (%EWL <50 %), good for 40 % of patients (%EWL 50-75 %), very good for 24 % of patients (%EWL from >75-90 %), and excellent for 19 % of patients (%EWL >90 %). The four most significant predictors of BMI change 60 months after RYGB (in descending order of magnitude) were preoperative BMI, preoperative WC, surgical access, and age; and of %EWL, surgical access, preoperative BMI, preoperative WC, and age.

conclusionsAfter 60 months of follow-up, the most relevant predictors of weight loss after RYGB were lower preoperative BMI and WC, videolaparoscopy as surgical access, and younger age. Further studies must be carried out to elucidate the impact of these factors on RYGB outcomes.

Indexed as

Weight LossAdolescentAdultAgedBody Mass IndexCohort StudiesFemaleFollow-Up StudiesGastric BypassHumansLaparoscopyMaleMiddle AgedObesity, MorbidRetrospective StudiesWaist CircumferenceGastric bypassObesityPredicting factorWeight loss

Identifiers

PMID26433591
OpenAlexW2188498331

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.