Evidence map›Paper›PMID 32024495›Full record

ArticleBMC endocrine disorders2020

Are there really any predictive factors for a successful weight loss after bariatric surgery?

Diego Cadena-Obando, Claudia Ramírez-Rentería, Aldo Ferreira-Hermosillo, Alejandra Albarrán-Sanchez, Ernesto Sosa-Eroza, Mario Molina-Ayala, Etual Espinosa-Cárdenas

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC endocrine disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 7 pooled it
18.8field-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

88 citing papers in PubMed, 7 syntheses or guidelines pooled it, 150 citations in OpenAlex.

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  18. Body-Mapping the Affective Politics of Bariatric Surgery.International review of qualitative research : IRQR · 2026
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28 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

7 authors at 3 institutions in 1 country.

Diego Cadena-ObandoEndocrinology department, Hospital de Especialidades. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtémoc 330, Col Doctores, Cuauhtémoc, 06720, Mexico City, CP, Mexico.
Claudia Ramírez-RenteríaUIM Enfermedades Endocrinas. Hospital de Especialidades UMAE Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
Aldo Ferreira-HermosilloExperimental Endocrinology Research Unit. Hospital de Especialidades UMAE Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
Alejandra Albarrán-SanchezInternal Medicine department. Hospital de Especialidades. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
Ernesto Sosa-ErozaEndocrinology department, Hospital de Especialidades. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtémoc 330, Col Doctores, Cuauhtémoc, 06720, Mexico City, CP, Mexico.
Mario Molina-AyalaEndocrinology department, Hospital de Especialidades. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtémoc 330, Col Doctores, Cuauhtémoc, 06720, Mexico City, CP, Mexico.
Etual Espinosa-CárdenasEndocrinology department, Hospital de Especialidades. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtémoc 330, Col Doctores, Cuauhtémoc, 06720, Mexico City, CP, Mexico. espinosaetual@gmail.com.
Mexican Social Security Institute · MXHospital de Especialidades · MXCentro Medico Nacional Siglo XXI · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCurrently, bariatric surgery is the most effective treatment for severe obesity and its metabolic complications; however, 15-35% of the patients that undergo bariatric surgery do not reach their goal for weight loss. The aim of this study was to determine the proportion of patients that didn't reach the goal of an excess weight loss of 50% or more during the first 12 months and determine the factors associated to this failure.

methodsWe obtained the demographic, anthropometric and biochemical information from 130 patients with severe obesity who underwent bariatric surgery in our institution between 2012 and 2017. We used self-reports of physical activity, caloric intake and diet composition. An unsuccessful weight loss was considered when the patient lost < 50% or more of the excess weight 12 months after surgery. We compared the characteristics between the successful and unsuccessful groups in order to find the factors associated with success.

resultsWe included 130 patients (mean age 48 ± 9 years, 81.5% were women). One year after surgery, 26 (20%) had loss < 50% EBW. Unsuccessful surgery was associated with an older age, previous history of hypertension, abdominal surgery or depression/anxiety, also the number of comorbidities and unemployment affected the results. These patients loss enough weight to improve some of their comorbidities, but they are more prone to regain weight 2 years after surgery.

conclusionsA fifth of the patients undergoing bariatric surgery may not lose enough weight to be considered successful by current standards. Some patients may benefit from the surgery in the short term, but they are more likely to regain weight after 2 years. The factors influencing this result are still controversial but may be population-specific. Early detection of the patients that are more likely to fail is imperative to establish additional therapeutic strategies, without denying them the opportunity of surgery or waiting for weight re-gain to occur.

Indexed as

Body Mass IndexWeight GainWeight LossBariatric SurgeryDietFemaleFollow-Up StudiesHumansMaleMiddle AgedObesityRetrospective StudiesTreatment OutcomeBariatric surgeryFactors associatedOne anastomosis gastric bypassWeight lossY-roux gastric bypass

Identifiers

PMID32024495
PMCPMC7003414
OpenAlexW3010254552

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.