Evidence map›Paper›PMID 33537948›Full record

ArticleObesity surgery2021

The Complex Association Between Bariatric Surgery and Depression: a National Nested-Control Study.

Chanpreet Singh Arhi, Roise Dudley, Osama Moussa, Maddalena Ardissino, Samantha Scholtz, Sanjay Purkayastha

Abstract read
In one paragraph

Article in Obesity surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

  1. Review
  2. Early Impact of Bariatric Surgery on Brain Functionality.Journal of metabolic and bariatric surgery · 2025
    Review
  3. Review
  4. Article
  5. DEPRESSIVE AND EATING DISORDERS IN PATIENTS POST-BARIATRIC SURGERY WITH WEIGHT REGAIN: A DESCRIPTIVE OBSERVATIONAL STUDY.Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 2023
    Observational
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. DEVELOPMENT AND VALIDATION OF A PSYCHOLOGICAL SCALE FOR BARIATRIC SURGERY: THE BARITEST.Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 2022
    Article
  12. Article
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.

Chanpreet Singh Arhi *Department of Surgery and Cancer, Imperial College London, St Mary's Hospital, London, W2 1NY, UK. c.arhi@imperial.ac.uk.ORCID http://orcid.org/0000-0001-8159-3829
Roise Dudley *Department of Surgery and Cancer, Imperial College London, St Mary's Hospital, London, W2 1NY, UK.
Osama MoussaDepartment of Surgery and Cancer, Imperial College London, St Mary's Hospital, London, W2 1NY, UK.
Maddalena ArdissinoDepartment of Surgery and Cancer, Imperial College London, St Mary's Hospital, London, W2 1NY, UK.
Samantha ScholtzDepartment of Surgery and Cancer, Imperial College London, St Mary's Hospital, London, W2 1NY, UK.
Sanjay PurkayasthaDepartment of Surgery and Cancer, Imperial College London, St Mary's Hospital, London, W2 1NY, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough bariatric surgery has been shown to reduce weight loss and obesity-related conditions, an improvement in depression remains unclear. The aim of this study was to determine whether bariatric surgery is associated with a resolution of depression, and the prevention of its onset.

methodPatients with a BMI ≥ 30 kg/m

resultsIn total, 3534 patients who underwent surgery, of which 2018 (57%) had pre-existing depression, were matched to 15,480 controls. Cox proportional hazard modelling demonstrated surgery was associated with a HR of 1.50 (95% CI 1.32-1.71, p < 0.005) for developing de novo depression. For those with pre-existing depression, by 5 years, just over 20% of post-surgical patients had no further depression episodes compared with 17% of controls.

conclusionIn individuals with a history of depression, bariatric surgery is associated with an improvement in mental health. On the contrary, the finding of increased de novo diagnoses of depression following surgery indicates the need for further study of the mechanisms by which bariatric surgery is associated with depression in this subset of patients.

Indexed as

Bariatric SurgeryObesity, MorbidDepressionHumansObesityWeight LossBariatric surgeryCPRDDepressionPrimary care

Identifiers

PMID33537948
PMCPMC8041688

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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.