Evidence map›Paper›PMID 25421881›Full record

ArticleObesity surgery2015

Patterns of Weight Loss Response Following Gastric Bypass and Sleeve Gastrectomy.

Ana de Hollanda, Tania Ruiz, Amanda Jiménez, Lílliam Flores, Antonio Lacy, Josep Vidal

Registry-linked trialAbstract read
PubMed Publisher
In one paragraph

Article in Obesity surgery, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06297928 (Metabolomics and Bariatric Surgery in Patients With Metabolically Unhealthy Obesity), which is not on this map. Cited by 52 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 4 pooled it
6.5field-weighted citation impact, top 3% 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.

NCT06297928 completednot on this mapstarted 2024, after this paper: background citation

Metabolomics and Bariatric Surgery in Patients With Metabolically Unhealthy Obesity: Advancing Precision Medicine for the Treatment of Obesity

TypeobservationalSponsorParc de Salut MarRan2024 to 2025Enrolled145ConditionsBariatric Surgery Candidate, Obesity, Morbid, Obesity, Metabolically BenignArmsbaratric surgery
3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 4 syntheses or guidelines pooled it, 99 citations in OpenAlex.

  1. Efficacy and Safety of Bariatric Surgery in Acquired Hypothalamic Obesity: A Systematic Review and Individual Patient Data Meta-Analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
    Pooled it
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  7. 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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  17. Weight loss maintenance after bariatric surgery.World journal of clinical cases · 2023
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  20. Observational
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

6 authors at 2 institutions in 1 country.

Ana de HollandaObesity Unit, Endocrinology and Nutrition Department, Hospital Clinic Universitari, Villarroel 170, 08036, Barcelona, Spain.
Tania Ruiz
Amanda Jiménez
Lílliam Flores
Antonio Lacy
Josep Vidal
Hospital Universitari de Vic · ESUniversitat de Barcelona · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite the health benefits of bariatric surgery (BS) extend beyond WL, better understanding of the WL response may help improve the outcomes of BS. In this context, we aimed to assess patterns within the variability of weight loss (WL) after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG).

methodsWL data from 658 subjects that underwent RYGB (n = 464) or SG (n = 194) as first BS were analyzed. Based on excess WL (EWL), subjects were categorized as good WL responders (EWL ≥ 50 % at nadir weight and throughout follow-up), primarily poor WL responders (1-PWL:EWL < 50 % at nadir weight and thereafter), and secondarily poor WL responders (2-PWL:EWL ≥ 50 % at nadir weight, but <50 % at last follow-up visit). Predictors associated with different WL outcomes were ascertained using regression analysis.

resultsMedian follow-up was 55.7 months. Nadir EWL ranged 12.4-143.6 %; last follow-up visit EWL ranged -22.1-143.6 % and weight regain (WR) ranged 0-64.1 kg. Good WL was found in 75.7 of the cohort. 1-PWL response (4.7 %) was characterized by lesser WL but similar WR as compared to good WL and was associated with larger BMI and diabetes prior to surgery. 2-PWL response (19.6 %) was characterized by larger WR as compared to the other groups and was more common following SG. Lesser percentage of medical appointments kept was associated with 1-PWL and 2-PWL.

conclusionOur data show the high inter-individual variability of the WL response at mid-term after RYGB and SG and that poor WL after BS could be illustrated by two different patterns, characterized either by sustained limited WL (1-PWL), or pronounced weight regain (2-PWL).

Indexed as

GastrectomyGastric BypassAdultFemaleHumansMaleMiddle AgedObesity, MorbidTreatment OutcomeWeight Loss

Identifiers

PMID25421881
OpenAlexW2123172955

What OpenQuestion holds

Textmetadata
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.