Evidence map›Paper›PMID 33409981›Full record

SynthesisObesity surgery2021

Impact of Bariatric Surgery in Reducing Macrovascular Complications in Severely Obese T2DM Patients.

Salman Hussain, Mohd Shahnawaz Khan, Mohammad Chand Jamali, Ali Nasir Siddiqui, Gaurav Gupta, Md Sarfaraj Hussain, Fohad Mabood Husain

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Obesity surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Metabolic surgery versus usual care effects on mortality among patients with obesity and type 2 diabetes: A systematic review and meta-analysis.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2025
    Review
  3. Review
  4. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 3 countries.

Salman HussainDepartment of Pharmaceutical Medicine (Division of Pharmacology), School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
Mohd Shahnawaz KhanDepartment of Biochemistry, King Saud University, Riyadh, Saudi Arabia.
Mohammad Chand JamaliDepartment of Health and Medical Sciences, Khawarizmi International College, Abu Dhabi, United Arab Emirates. mjamali68@gmail.com.ORCID http://orcid.org/0000-0002-1990-0610
Ali Nasir Siddiqui, New Delhi, India.
Gaurav GuptaDepartment of Pharmacology, School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur, India.
Md Sarfaraj HussainDepartment of Pharmacognosy & Phytochemistry, R.V. Northland Institute of Pharmacy, Dadri, U.P, India.
Fohad Mabood HusainDepartment of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
Jamia Hamdard · INKing Saud University · SAAl Khawarizmi International College · AEGyan Vihar University · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEvidence from real-world studies have suggested a reduced rate of macrovascular complications following bariatric surgery. We undertook this meta-analysis to investigate the impact of bariatric surgery on macrovascular disease outcomes in severely obese type 2 diabetes mellitus (T2DM) patients.

methodsAn extensive literature search was performed in PubMed from inception until March 2020. All cohort studies assessing the association between bariatric surgery and macrovascular complications in severely obese T2DM patients were included. Two independent reviewers screened the articles, extracted data, and assessed the quality using the Newcastle-Ottawa Scale. The primary outcome was to assess the impact of bariatric surgery and the risk of macrovascular complications. Statistical analysis was performed using Review Manager 5.3.

resultsThis meta-analysis comprised of five studies including 49,211 participants (75% female), of which 14,434 underwent bariatric surgery and 34,777 underwent usual care. Participants who underwent bariatric surgery had a significantly lower risk of macrovascular complications as compared to those with non-surgical interventions (RR: 0.50 [95% CI: 0.35-0.73], p = 0.0003). In the subgroup analysis, based on the geographical regions, studies conducted in the USA showed a higher reduction (RR: 0.41 [95% CI: 0.32-0.53], p < 0.00001) in macrovascular complications as compared to other parts of the world. The risk of all-cause mortality was also significantly lower in patients with bariatric surgery (RR 0.39 [95% CI: 0.30-0.50], p < 0.00001).

conclusionBariatric surgery was associated with a 50% reduction in macrovascular complications along with 61% reduction in risk of all-cause mortality in morbidly obese T2DM patients.

Indexed as

Bariatric SurgeryDiabetes Mellitus, Type 2Obesity, MorbidVascular DiseasesCohort StudiesFemaleHumansMaleBariatric surgeryDiabetes complicationsMacrovascular complicationsMeta-analysisObesityT2DM

Identifiers

PMID33409981
OpenAlexW3118360167

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.