The Claim

Daily administration of 100 mg enteric-coated aspirin significantly increases the risk of major hemorrhage, including hemorrhagic stroke, symptomatic intracranial bleeding, and clinically significant extracranial bleeding requiring medical intervention or resulting in death, in healthy community-dwelling adults aged 70 years and older.

Source: Effect of Aspirin on Cardiovascular Events and Bleeding in the Healthy Elderly

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
88score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Taking a daily 100 mg aspirin pill raises the chance of serious bleeding, like brain bleeds or heavy bleeding that needs hospital care, in healthy seniors over 70. This means older adults who take aspirin every day are more likely to experience dangerous bleeding events compared to those who don't.

See the scientific wording

Daily administration of 100 mg enteric-coated aspirin significantly increases the risk of major hemorrhage, defined as hemorrhagic stroke, symptomatic intracranial bleeding, or clinically significant extracranial bleeding requiring transfusion, hospitalization, surgery, or resulting in death, in healthy community-dwelling adults aged 70 years and older. Over a median follow-up of 4.7 years, the event rate was 8.6 per 1000 person-years in the aspirin group compared to 6.2 per 1000 person-years in the placebo group, yielding a hazard ratio of 1.38 (95% CI 1.18 to 1.62; P<0.001).

What the research says

1 study

  1. Study: Effect of Aspirin on Cardiovascular Events and Bleeding in the Healthy Elderly

    The RCT design with randomization and double-blinding establishes causation. The statistically significant hazard ratio of 1.38 with a narrow confidence interval entirely above 1.0 confirms a causal increase in major bleeding events.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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