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The Study

Daily aspirin for primary prevention increased risk for major GI bleeding in healthy older adults

In simple terms

This study gave some older people aspirin and others a placebo to see what happened. It found that those taking aspirin had more stomach bleeding, so it's likely aspirin caused it — but we’re not 100% sure because we don’t know if everyone was blinded.

35%

Analysis score

35/ 90

Maximum 90 for a randomized controlled trial.

Where the score came from

Reporting0
Methodology44
Publication100
Statistical0
Study type (basis of the score)
Randomized Controlled Trial
Level 1b - Individual RCT
What’s the bottom line?

This study looked at whether taking aspirin every day to stay healthy makes older people more likely to have serious stomach bleeding.

Where does this study sit?

Reviews of RCTs (Meta-analyses)

Max 100

Randomized Trials

Max 90

Reviews of Cohort Studies

Max 85

Cohort Studies

Max 72

Reviews of Case-Control Studies

Max 63

Case-Control Studies

Max 58

Cross-Sectional & Case Series

Max 50

Expert Opinion

Max 5
StrongerWeaker
Randomized Trials
Level 1b
35

35 / 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.

Can establish causation

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Key takeaways

Summary

Based on the study abstract and findings.

  1. 1Even without exact numbers, the finding suggests that for healthy older adults, aspirin's bleeding risk may outweigh its benefits.
  2. 2Aspirin increased the risk of major GI bleeding; no numbers were given.

Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data

Publication

Journal

Annals of Internal Medicine

Year

2021

Authors

C. Hirsch

3 citations
Analysis v5
Fit Body Science verdict — we translate health studies into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.