Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

Trends in Incidence of Intracerebral Hemorrhage and Association With Antithrombotic Drug Use in Denmark, 2005-2018

Research output: Contribution to journalJournal articleResearchpeer-review

  1. Effect of Vasoactive Intestinal Polypeptide on Development of Migraine Headaches: A Randomized Clinical Trial

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Association of Childhood Fat Mass and Weight With Adult-Onset Type 2 Diabetes in Denmark

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Mortality Among Young Adults Born Preterm and Early Term in 4 Nordic Nations

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Assessment of Suicidal Behaviors Among Individuals With Autism Spectrum Disorder in Denmark

    Research output: Contribution to journalJournal articleResearchpeer-review

  1. Workforce Attachment after Ischemic Stroke – The Importance of Time to Thrombolytic Therapy

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Progressive alcohol-related liver fibrosis is characterised by imbalanced collagen formation and degradation

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Using MR elastography to assess portal hypertension and response to beta-blockers in patients with cirrhosis

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Age At Menopause: A Female Risk Factor of Stroke?

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Nonalcoholic Fatty Liver Disease and Cardiovascular Disease: Overlapping Mechanisms

    Research output: Contribution to journalReviewResearchpeer-review

  • Stine Munk Hald
  • Sören Möller
  • Luis Alberto García Rodríguez
  • Rustam Al-Shahi Salman
  • Mike Sharma
  • Hanne Christensen
  • Maja Hellfritzsch
  • Anton Pottegård
  • Jesper Hallas
  • David Gaist
View graph of relations

Importance: Spontaneous (nontraumatic) intracerebral hemorrhage (ICH) is the most severe complication of antithrombotic drug use.

Objectives: To estimate the strength of association between use of antithrombotic drugs and risk of ICH and to examine major changes in the incidence of ICH in the general population.

Design, Setting, and Participants: This case-control study of patients with a first-ever ICH from January 1, 2005, to December 31, 2018, matched by age, sex, and calendar year with general population controls (1:40 ratio), assessed case and control patients 20 to 99 years of age in population-based nationwide registries in Denmark (population of 5.8 million).

Exposures: Use of low-dose aspirin, clopidogrel, a vitamin K antagonist (VKA), or a direct oral anticoagulant (DOAC).

Main Outcomes and Measures: Association of ICH with antithrombotic drug use, annual age- and sex-standardized incidence rate of ICH, and prevalence of treatment with antithrombotic drugs. Conditional logistic regression models estimated adjusted odds ratios (aORs) (95% CIs) for the association of antithrombotic drugs with ICH.

Results: Among 16 765 cases with ICH (mean [SD] age, 72.8 [13.1] years; 8761 [52.3%] male), 7473 (44.6%) were exposed to antithrombotic medications at the time of ICH onset. The association with ICH was weakest for current use of low-dose aspirin (cases: 28.7%, controls: 22.6%; aOR, 1.51; 95% CI, 1.44-1.59) and clopidogrel (cases: 6.2%, controls: 3.4%; aOR, 1.65; 95% CI, 1.47-1.84) and strongest with current use of a VKA (cases: 12.0%, controls: 5.0%; aOR, 2.76; 95% CI, 2.58-2.96). The association with ICH was weaker for DOACs (cases: 3.0%, controls: 1.8%; aOR, 1.83; 95% CI, 1.61-2.07) than for VKAs. Compared with 2005, the prevalence of use of oral anticoagulants among general population controls in 2018 was higher (3.8% vs 11.1%), predominantly because of increased use of DOACs (DOACs: 0% vs 7.0%; VKA: 3.8% vs 4.2%). Antiplatelet drugs were used less frequently (24.7% vs 21.4%) because of decreased use of low-dose aspirin (24.3% vs 15.3%), whereas clopidogrel use increased (1.0% vs 6.8%). The age- and sex-standardized incidence rate of ICH decreased from 33 per 100 000 person-years in 2005 to 24 per 100 000 person-years in 2018 (P < .001 for trend).

Conclusions and Relevance: In Denmark from 2005 to 2018, use of antithrombotic drugs, especially VKAs, was associated with ICH. Although use of oral anticoagulation increased substantially during the study period, the incidence rate of ICH decreased.

Original languageEnglish
Article numbere218380
JournalJAMA network open
Volume4
Issue number5
Pages (from-to)e218380
ISSN2574-3805
DOIs
Publication statusPublished - 3 May 2021

ID: 66519980