SynthesisEndocrine2025

Clinical outcomes in type 2 diabetes patients with chronic heart failure treated with metformin: a meta-analysis.

Wenxia Huang, Rongchen Zhao

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Endocrine, 2025. The graph read 2 numbers from its abstract, feeding 2 cells of the map, but none could be read as for or against, so it casts no vote. Cited by 4 papers.

2numbers the graph read from it
0cells of the map it votes in
4citing 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.

Read, but not usablea number the graph found but could not read as for or against

All-cause mortalitycomparator not stated · t2d, heart_failurefeeds one cell of the map
RR 0.720.60 to 0.87
The results revealed that in comparison to the non-Met group, the Met group exhibited a significantly reduced risk of all-cause mortality (RR = 0.72, 95%CI: 0.60-0.87) and a notably lower risk of cardiovascular mortality (RR = 0.52, 95%CI:0.29-0.92).
Cardiovascular eventscomparator not stated · t2d, heart_failurefeeds one cell of the map
RR 0.520.29 to 0.92
The results revealed that in comparison to the non-Met group, the Met group exhibited a significantly reduced risk of all-cause mortality (RR = 0.72, 95%CI: 0.60-0.87) and a notably lower risk of cardiovascular mortality (RR = 0.52, 95%CI:0.29-0.92).

clause the extractor read what became the number

2 · Its place on the map

Where it lands on the map

Rows are treatments, columns are outcomes. The coloured squares are the cells this paper feeds, coloured by the vote it casts there. Click one to jump to what this paper adds to it.

supports the treatmentfavours the comparatorno clear differenceread, but no usable result
3 · What it changes

What it adds to each cell

For every cell the paper feeds: the belief in the claim with and without this paper, and this paper's estimate drawn against every other readable study in the cell. The ringed dot is this paper.

Metformin×all-cause mortality

No readable resultOpen on the map →What to test next →

1 readable study in this cell: 0 favour the treatment, 1 find no difference, 0 favour the comparator.

Belief with this paper
0.50one trial · 1 family supports, 0 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the treatmentfavours the comparator →
1 · no effect
NCT000387272,779 enrolled · 1996
HR 0.990.79 to 1.25

This paper's own estimate is on a different scale from the rest of the cell, so it is not drawn here.

Metformin×cardiovascular events

No readable resultOpen on the map →What to test next →

5 readable studies in this cell: 4 favour the treatment, 1 find no difference, 0 favour the comparator.

Belief with this paper
0.50contested · 4 families support, 2 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the treatmentfavours the comparator →
1 · no effect

This paper's own estimate is on a different scale from the rest of the cell, so it is not drawn here.

4 · 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.

5 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Review
  2. Review
  3. Review
  4. Review
6 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

7 · Who and what money

Authors and funding

2 authors.

Wenxia HuangDepartment of Cardiovascular Medicine, Hainan General Hospital Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China.
Rongchen ZhaoDepartment of Respiratory and Critical Care Medicine, The Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China. rcsdcn@163.com.

Funding

No grant is acknowledged in the PubMed record.

8 · The paper itself

Abstract

The marked sentences are the ones the graph read a number from.

objectiveTo explore outcomes of metformin (Met) as an antihyperglycemic agent in patients with type 2 diabetes mellitus (T2DM) combined with chronic heart failure (CHF).

methodsThis article employed a meta-analysis approach to systematically search several databases. Stata 15.1 software was employed for statistical analysis.

resultsThis meta-analysis encompassed 15 randomized controlled trials, involving 20,595 patients with T2DM and CHF. The results revealed that in comparison to the non-Met group, the Met group exhibited a significantly reduced risk of all-cause mortality (RR = 0.72, 95%CI: 0.60-0.87) and a notably lower risk of cardiovascular mortality (RR = 0.52, 95%CI:0.29-0.92). However, there was no significant difference in the risk of hospitalization due to heart failure (RR = 0.85, 95%CI: 0.70-1.04). Furthermore, the Met group demonstrated significant improvements in NT-proBNP levels compared to the non-Met group (WMD = -132.91, 95%CI: -173.03, -92.79). Regarding the enhancement of Left Ventricular Ejection Fraction and Left Ventricular End-Diastolic Dimension levels, no statistically significant differences were observed between the two groups.

conclusionIn individuals with T2DM and CHF, the use of Met is linked to a decreased likelihood of all-cause mortality and cardiovascular-related mortality. Furthermore, it can enhance cardiac function in CHF patients without elevating the risk of hospitalization due to heart failure, establishing its safety and potential benefits.

Indexed as

Diabetes Mellitus, Type 2Heart FailureHypoglycemic AgentsMetforminChronic DiseaseHospitalizationHumansRandomized Controlled Trials as TopicTreatment OutcomeHypoglycemic AgentsMetforminChronic Heart failureClinical OutcomesMeta-analysisMetforminType 2 Diabetes

Identifiers

PMID39277567

What Socratic holds

Texttitle and abstract
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.