Myocardial Infarction Risk and Tamoxifen Therapy for Breast Cancer
Author Information
Author(s): Geiger A M, Chen W, Bernstein L
Primary Institution: Kaiser Permanente Southern California
Hypothesis
Does tamoxifen treatment for breast cancer affect the risk of myocardial infarction?
Conclusion
Tamoxifen treatment for breast cancer does not appear to increase or decrease the risk of myocardial infarction.
Supporting Evidence
- Tamoxifen was unassociated with myocardial infarction after adjusting for known risk factors.
- Radiation therapy was associated with an increased risk of myocardial infarction.
- Over half of the myocardial infarction cases were classified as definite.
Takeaway
This study looked at whether a medicine called tamoxifen, used for breast cancer, affects heart attacks. It found that tamoxifen doesn't change the chances of having a heart attack.
Methodology
A case-control study was conducted among women diagnosed with breast cancer to assess the impact of tamoxifen on myocardial infarction risk.
Potential Biases
Potential selection bias and misclassification of exposure and outcome variables.
Limitations
Small sample sizes limit the ability to draw definitive conclusions about the effects of tamoxifen duration and cumulative dose.
Participant Demographics
The mean age of subjects at breast cancer diagnosis was 66.8 years, with nearly 75% being white.
Statistical Information
P-Value
0.49
Confidence Interval
95% CI=0.7–1.9
Statistical Significance
p=0.49
Digital Object Identifier (DOI)
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