Evidence map›Paper›PMID 26394673›Full record

SynthesisBMC medicine2015

Coffee consumption is not associated with increased risk of atrial fibrillation: results from two prospective cohorts and a meta-analysis.

Susanna C Larsson, Nikola Drca, Mats Jensen-Urstad, Alicja Wolk

Registry-linked trialAbstract readMeta-Analysis
In one paragraph

Synthesis in BMC medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05464940 (Impact of Intravenous Caffeine on Atrial Electrical Properties and Potential Arrythmia Induction in Patients With Paroxysmal Atrial Fibrillation), which is not on this map. Cited by 29 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 7 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.

NCT05464940 nanot yet recruitingnot on this mapstarted 2025, after this paper: background citation

Impact of Intravenous Caffeine on Atrial Electrical Properties and Potential Arrythmia Induction in Patients With Paroxysmal Atrial Fibrillation: The COFFEE-AF Trial

TypeinterventionalSponsorKansas City Heart Rhythm Research FoundationRan2025 to 2026Enrolled100ConditionsAtrial FibrillationArmsIntravenous caffeine, Masked Placebo
3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 7 syntheses or guidelines pooled it.

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  8. Association of coffee consumption with diabetes mellitus and gestational diabetes mellitus.International journal of cardiology. Cardiovascular risk and prevention · 2026
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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

4 authors.

Susanna C LarssonUnit of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden. susanna.larsson@ki.se.
Nikola DrcaDepartment of Cardiology, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden.
Mats Jensen-UrstadDepartment of Cardiology, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden.
Alicja WolkUnit of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhether coffee consumption affects the risk of developing atrial fibrillation (AF) remains unclear. We sought to investigate the association between coffee consumption and incidence of AF in two prospective cohorts, and to summarize available evidence using a meta-analysis.

methodsOur study population comprised 41,881 men in the Cohort of Swedish Men and 34,594 women in the Swedish Mammography Cohort who had provided information on coffee consumption in 1997 and were followed up for 12 years. Incident cases of AF were ascertained by linkage with the Swedish Hospital Discharge Register. For the meta-analysis, prospective studies were identified by searching PubMed and Embase through 22 July 2015, and by reviewing the reference lists of retrieved articles. Study-specific relative risks were combined using a random effects model.

resultsWe ascertained 4,311 and 2,730 incident AF cases in men and women, respectively, in the two cohorts. Coffee consumption was not associated with AF incidence in these cohort studies. The lack of association was confirmed in a meta-analysis, including six cohort studies with a total of 10,406 cases of AF diagnosed among 248,910 individuals. The overall relative risk (95% confidence interval) of AF was 0.96 (0.84-1.08) for the highest versus lowest category of coffee consumption, and 0.99 (0.94-1.03) per 2 cups/day increment of coffee consumption.

conclusionsWe found no evidence that coffee consumption is associated with increased risk of AF.

Indexed as

AdultAgedAged, 80 and overAtrial FibrillationCardiovascular DiseasesCoffeeCohort StudiesFemaleHumansIncidenceMaleMiddle AgedProspective StudiesRisk FactorsCoffee

Identifiers

PMID26394673
PMCPMC4579587

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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.