Evidence map›Paper›PMID 27866164›Full record

ArticleJournal of the American Heart Association2016

Relationship Between Anemia and Mortality Outcomes in a National Acute Coronary Syndrome Cohort: Insights From the UK Myocardial Ischemia National Audit Project Registry.

Mamas A Mamas, Chun Shing Kwok, Evangelos Kontopantelis, Anthony A Fryer, Iain Buchan, Max O Bachmann, M Justin Zaman, Phyo K Myint

Open access · goldAbstract read
In one paragraph

Article in Journal of the American Heart Association, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% 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

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

  1. Pooled it
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  10. The Negative Influence and Adverse Outcome of Red Blood Cell Transfusion in Contemporary Percutaneous Coronary Interventions.Indian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion · 2025
    Review
  11. Usefulness of the AHEAD score for prediction of all-cause death in patients with acute and chronic coronary syndromes.International journal of cardiology. Cardiovascular risk and prevention · 2025
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 1 country.

Mamas A MamasKeele Cardiovascular Research Group, Institutes of Science and Technology in Medicine and Primary Care and Health Sciences, Keele University, Stoke-on-Trent, United Kingdom mamasmamas1@yahoo.co.uk.
Chun Shing KwokKeele Cardiovascular Research Group, Institutes of Science and Technology in Medicine and Primary Care and Health Sciences, Keele University, Stoke-on-Trent, United Kingdom.
Evangelos KontopantelisFarr Institute, University of Manchester, United Kingdom.
Anthony A FryerInstitute of Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom.
Iain BuchanFarr Institute, University of Manchester, United Kingdom.
Max O BachmannNorwich Medical School, University of East Anglia, Norwich, United Kingdom.
M Justin ZamanNorwich Research Park Cardiovascular Research Group, Norwich, United Kingdom.
Phyo K MyintNorwich Research Park Cardiovascular Research Group, Norwich, United Kingdom.
Farr Institute · GBKeele University · GBNorwich Research Park · GBRoyal Stoke University Hospital · GBUniversity of Aberdeen · GB

Funding

Medical Research Council MC_PC_13042Medical Research Council MR/K006665/1
6 · The paper itself

Abstract

backgroundWe aim to determine the prevalence of anemia in acute coronary syndrome (ACS) patients and compare their clinical characteristics, management, and clinical outcomes to those without anemia in an unselected national ACS cohort. METHODS AND

resultsThe Myocardial Ischemia National Audit Project (MINAP) registry collects data on all adults admitted to hospital trusts in England and Wales with diagnosis of an ACS. We conducted a retrospective cohort study by analyzing patients in this registry between January 2006 and December 2010 and followed them up until August 2011. Multiple logistic regressions were used to determine factors associated with anemia and the adjusted odds of 30-day mortality with 1 g/dL incremental hemoglobin increase and the 30-day and 1-year mortality for anemic compared to nonanemic groups. Analyses were adjusted for covariates. Our analysis of 422 855 patients with ACS showed that 27.7% of patients presenting with ACS are anemic and that these patients are older, have a greater prevalence of renal disease, peripheral vascular disease, diabetes mellitus, and previous acute myocardial infarction, and are less likely to receive evidence-based therapies shown to improve clinical outcomes. Finally, our analysis suggests that anemia is independently associated with 30-day (OR 1.28, 95% CI 1.22-1.35) and 1-year mortality (OR 1.31, 95% CI 1.27-1.35), and we observed a reverse J-shaped relationship between hemoglobin levels and mortality outcomes.

conclusionsThe prevalence of anemia in a contemporary national ACS cohort is clinically significant. Patients with anemia are older and multimorbid and less likely to receive evidence-based therapies shown to improve clinical outcomes, with the presence of anemia independently associated with mortality outcomes.

Indexed as

MortalityRegistriesAcute Coronary SyndromeAgedAged, 80 and overAnemiaCause of DeathClinical AuditCohort StudiesDiabetes MellitusEnglandEvidence-Based PracticeFemaleHemoglobinsHumansKidney DiseasesHemoglobinsacute coronary syndromeanemiamortality

Identifiers

PMID27866164
PMCPMC5210321
OpenAlexW2549490429

What OpenQuestion holds

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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.