The Study
Clonal Hematopoiesis and Cardiovascular Disease and Bleeding Risk and the Effectiveness of Aspirin.
This study is like a fair test where people were randomly given either aspirin or a sugar pill, and then researchers watched what happened over many years. They found that people with a certain blood condition (CHIP) had more bleeding, but aspirin didn't seem to help or hurt them more than others. But because they looked at small groups, we can't be super sure about those smaller findings.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Some older people have a harmless blood mutation called CHIP. This study tested if taking low-dose aspirin helps them avoid heart attacks or strokes.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 580 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1The bleeding risk increase is small but meaningful for older adults already at risk for bleeding; aspirin offers no extra benefit for CHIP carriers.
- 223% of participants had CHIP.
- 3CHIP didn't raise heart attack or stroke risk.
- 4But people with CHIP had 24% more serious bleeding.
- 5Aspirin didn't help or hurt CHIP carriers more than others.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
JAMA cardiology
Year
2025
Authors
Zoe K. McQuilten, L. T. Thao, Alexander G. Bick, Sean Byars, Andrew T. Chan, Leslie Ford, Anna Leichter, John J McNeil, A. Murray, A. Murphy, S. Orchard, James Phung, Hayley S. Ramshaw, Jasmine Singh, Andrew M Tonkin, Asad Umar, R. Wolfe, E. Wood, Robyn L. Woods, P. Lacaze, David J. Curtis
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.