Antihypertensive Treatments and Renal Cell Cancer Risk
Author Information
Author(s): Fryzek J P, Poulsen A H, Johnsen S P, McLaughlin J K, Sørensen H T, Friis S
Primary Institution: International Epidemiology Institute
Hypothesis
Does the use of antihypertensive treatments increase the risk of renal cell carcinoma?
Conclusion
The study found that while users of antihypertensive treatments had a higher risk of renal cell cancer, this association is likely due to confounding factors rather than a direct causal relationship.
Supporting Evidence
- Users of any antihypertensive treatment were 1.6 times more likely to have renal cell cancer compared to non-users.
- Specific classes of antihypertensive treatments showed varying levels of association with renal cell cancer risk.
- After 5 years of follow-up, the risk ratios for all classes of antihypertensive medications decreased.
Takeaway
People who take medicine for high blood pressure might seem to get kidney cancer more often, but it could be because they already had high blood pressure, not because the medicine causes cancer.
Methodology
The study analyzed data from 335,682 residents over 10 years, comparing those prescribed antihypertensive treatments to non-users and adjusting for confounding factors.
Potential Biases
Potential confounding from pre-existing hypertension and protopathic bias due to hypertension being an early sign of kidney disease.
Limitations
The study could not account for prior drug history before 1989 and lacked data on other known risk factors for renal cell cancer.
Participant Demographics
Participants were residents of North Jutland County, Denmark, aged 30 to 85, with a majority being women (58%) and over half over age 50 (77%).
Statistical Information
P-Value
1.6
Confidence Interval
95% CI 1.3–1.9
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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