Evidence map›Paper›PMID 31927271›Full record

ArticleThrombosis research2020

Hemoglobin concentration and risk of arterial and venous thrombosis in 1.5 million Swedish and Danish blood donors.

Malin Hultcrantz, Anton Modlitba, Senthil K Vasan, Arvid Sjölander, Klaus Rostgaard, Ola Landgren, Henrik Hjalgrim, Henrik Ullum, Christian Erikstrup, Sigurdur Y Kristinsson and 1 more

Open access · goldAbstract read
In one paragraph

Article in Thrombosis research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

15 citing papers in PubMed, 30 citations in OpenAlex.

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  11. Myeloproliferative Neoplasms and Sodium-Glucose Co-Transporter-2 Inhibitors: A Case SeriesTurkish journal of haematology : official journal of Turkish Society of Haematology · 2024
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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

11 authors at 8 institutions in 5 countries.

Malin HultcrantzDepartment of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden; Myeloma Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA. Electronic address: malin.hultcrantz@ki.se.
Anton ModlitbaDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Senthil K VasanOxford Center for Diabetes, Endocrinology, and Metabolism, University of Oxford, Oxford, United Kingdom.
Arvid SjölanderDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Klaus RostgaardDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Ola LandgrenMyeloma Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA.
Henrik HjalgrimDepartment of Hematology, Copenhagen University Hospital, Copenhagen, Denmark.
Henrik UllumDepartment of Clinical Immunology, the Blood Bank, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark.
Christian ErikstrupDepartment of Clinical Immunology, Aarhus University Hospital, Aarhus, Denmark.
Sigurdur Y KristinssonDepartment of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden; Faculty of Medicine, University of Iceland and Department of Hematology, Landspitali National University Hospital, Reykjavik, Iceland.
Gustaf EdgrenDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Södersjukhuset, Stockholm, Sweden.
Karolinska Institutet · SEMemorial Sloan Kettering Cancer Center · USAarhus University Hospital · DKCopenhagen University Hospital · DKRigshospitalet · DKStatens Serum Institut · DKUniversity of Iceland · ISUniversity of Oxford · GB

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Nicholas D Socci · 1985 to 2026
$347.4M
NCI NIH HHS P30 CA008748
6 · The paper itself

Abstract

introductionThere are conflicting results whether elevated hematocrit is associated with an increased risk of thromboembolic events in individuals without polycythemia vera. To assess the risk of vascular events in relation to hemoglobin concentration, we conducted a large population-based cohort study based on Scandinavian health registers. MATERIALS AND

methodsWe included 1,538,019 Swedish and Danish blood donors between 1987 and 2012. Hazard ratios (HRs) of arterial and venous thrombosis were estimated using Cox regression. Additionally, we fitted person-stratified models where each donor was compared only to him-/herself.

resultsThe risk of myocardial infarction and ischemic stroke increased with higher hemoglobin concentration in both men and women. The HRs for myocardial infarction and ischemic stroke in men with hemoglobin concentration ≥ 17.5 g/dL were 3.52 (95% confidence interval [CI], 2.85-4.36) and 2.36 (95% CI, 1.63-3.43), respectively, compared to the reference group. The corresponding HRs for women with hemoglobin concentration ≥ 16.0 g/dL were 3.22 (2.12-4.89) and 2.35 (1.37-4.02) for myocardial infarction and ischemic stroke, respectively. The risk of venous thrombosis was highest in men with subnormal hemoglobin concentration (<13.0 g/dL), HR 1.69 (95% CI, 1.40-2.04). In the person-stratified model, the association between elevated hemoglobin concentration and risk of myocardial infarction was attenuated but remained significant.

conclusionsIn this large cohort of Scandinavian blood donors, elevated hemoglobin concentration was associated with an increased risk of vascular events, primarily arterial events. Even though associations were weakened when each person served as their own control, a high hemoglobin concentration may serve as a cardiovascular risk marker.

Indexed as

StrokeVenous ThrombosisBlood DonorsCohort StudiesDenmarkFemaleHemoglobinsHumansMaleRisk FactorsSwedenHemoglobinsErythrocytosisHemoglobin levelIschemic strokeMyocardial infarctionVenous thrombosis

Identifiers

PMID31927271
PMCPMC7654700
OpenAlexW2996744594

What OpenQuestion holds

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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.