Evidence mapPaperPMID 34969689Full record

SynthesisBMJ open diabetes research & care2021

Cardiac autonomic neuropathy and risk of cardiovascular disease and mortality in type 1 and type 2 diabetes: a meta-analysis.

Mahin Chowdhury, Sarah Nevitt, Aikaterini Eleftheriadou, Prathap Kanagala, Hani Esa, Daniel J Cuthbertson, Abd Tahrani, Uazman Alam

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMJ open diabetes research & care, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 5 pooled it
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

51 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
  2. Cardioneuroablation for the treatment of reflex syncope and functional bradyarrhythmias: A Scientific Statement of the European Heart Rhythm Association (EHRA) of the ESC, the Heart Rhythm Society (HRS), the Asia Pacific Heart Rhythm Society (APHRS) and the Latin American Heart Rhythm Society (LAHRS).Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2024
    Guideline
  3. Pooled it
  4. Guideline
  5. Pooled it
  6. Article
  7. Article
  8. Article
  9. Validation of the Arabic version of the composite autonomic symptom score 31 questionnaire in diabetic autonomic neuropathy.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Relationship Between Physical Activity and Autonomic Responses in Adults with Type 2 Diabetes.International journal of environmental research and public health · 2025
    Observational
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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.

Mahin ChowdhuryDepartment of Cardiovascular and Metabolic Medicine, University of Liverpool, Liverpool, UK.ORCID 0000-0003-4356-5231
Sarah NevittDepartment of Health Data Science, University of Liverpool, Liverpool, UK.
Aikaterini EleftheriadouDepartment of Cardiovascular and Metabolic Medicine, University of Liverpool, Liverpool, UK.
Prathap KanagalaDepartment of Cardiovascular and Metabolic Medicine, University of Liverpool, Liverpool, UK.
Hani EsaDepartment of Cardiovascular and Metabolic Medicine, University of Liverpool, Liverpool, UK.
Daniel J CuthbertsonDepartment of Cardiovascular and Metabolic Medicine, University of Liverpool, Liverpool, UK.
Abd TahraniCentre of Endocrinology, Diabetes and Metabolism, University of Birmingham, Birmingham, UK.
Uazman AlamDepartment of Cardiovascular and Metabolic Medicine, University of Liverpool, Liverpool, UK Uazman.Alam@liverpool.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We aimed to determine the prognostic association between cardiac autonomic neuropathy (CAN) and cardiovascular disease events (CVE) and mortality in type 1 and type 2 diabetes through a systematic review and meta-analysis. This systematic review and meta-analysis was registered with PROSPERO (CRD42020216305) and was conducted with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodological criteria. CAN was defined on the basis of 1 (early/possible CAN) or ≥2 (definite CAN) positive autonomic function tests as per the Toronto Consensus guidelines. Studies included those with prospective CVE or mortality data. Methodological variables/risk of bias were assessed using ROBINS-I (Risk Of Bias In Non-randomized Studies - of Interventions) and RoB-2 (Risk-Of-Bias tool for randomized trials) appraisal tools. Electronic database searches yielded 18 467 articles; 84 articles were screened full-text, 26 articles fulfilled the inclusion criteria for quantitative synthesis. Sixteen studies from patients with (n=2875) and without (n=11 722) CAN demonstrated a pooled relative risk (RR) of 3.16 (95%CI 2.42 to 4.13; p<0.0001) of future CVE in favour of CAN. Nineteen studies provided all-cause mortality data from patients with (n=3679) and without (n=12 420) CAN, with a pooled RR of 3.17 (95%CI 2.11 to 4.78; p<0.0001) in favour of CAN. The risk of both future CVE and mortality was higher in type 1 compared with type 2 diabetes and with a definite CAN (vs possible CAN) diagnosis. Three studies were considered to have risk of serious bias. This study confirms the significant association between CAN and CVE and all-cause mortality. The implementation of population-based CAN screening will identify a subgroup with disproportionately higher cardiovascular and mortality risk that will allow for earlier targeted intervention.

Indexed as

Cardiovascular DiseasesDiabetes Mellitus, Type 1Diabetes Mellitus, Type 2Diabetic NeuropathiesHumansMass ScreeningPrognosiscardiac autonomic neuropathycardiovascular systemdiabetes complicationsmortality

Identifiers

PMID34969689
PMCPMC8719152

What Socratic 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 Socratic graph.