Cardiovascular Screening in Men 60-64: No Mortality Benefit
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Cardiovascular Screening in Men Aged 60-64 Doesn’t reduce All-Cause Mortality: DANCAVAS 2 Trial Results
Table of Contents
Key Takeaway: A large-scale Danish study, DANCAVAS 2, presented at ESC Congress 2025, found that inviting men aged 60-64 to undergo comprehensive cardiovascular disease (CVD) screening did not significantly reduce all-cause mortality. While screening identified risk factors, this didn’t translate into a lower death rate for the screened group.
Understanding Cardiovascular Disease and the Potential of Screening
Cardiovascular disease (CVD) remains a leading cause of death globally. It encompasses a range of conditions affecting the heart and blood vessels, including coronary artery disease, stroke, and peripheral artery disease. Early detection and intervention are widely believed to be crucial in preventing serious cardiac events. It’s estimated that up to 80% of cardiac events and strokes are preventable,with roughly half of that prevention achievable through early identification and proactive management of risk factors.
Population-based screening programs aim to identify individuals with early,often subclinical,signs of CVD – meaning the disease is present but hasn’t yet caused noticeable symptoms. However, the effectiveness of such programs is a subject of ongoing debate. While identifying risk factors is valuable, translating that knowledge into improved outcomes requires effective treatment and, crucially, patient adherence to recommended therapies.
The DANCAVAS 2 Trial: Design and Methodology
The DANCAVAS 2 trial was a population-based, randomized controlled trial designed to specifically address the question of whether screening men aged 60-64 could reduce all-cause mortality. This builds on previous research from the DANCAVAS 1 trial,which suggested a potential benefit in a slightly older age group (65-69 years).
key Trial Details:
Participants: All men aged 60-64 years residing in 18 Danish municipalities.
Randomization: 1:4 ratio – one participant was invited to screening for every four who weren’t. This design was chosen to minimize the burden on the healthcare system while still providing a statistically meaningful sample size for the invited group.
Blinding: Participants in the control group were blinded to the trial, meaning thay were unaware that a screening program was being evaluated.
Intervention: The invited group received an invitation to undergo a comprehensive CVD screening examination.
primary Outcome: Death from any cause.
Dates: August 2017 – November 2018 (recruitment).
Sample Size: 31,268 men (25,322 control, 5,946 invited).
What Did the Screening Entail?
The screening process was comprehensive, utilizing several diagnostic tools to assess cardiovascular health:
Coronary Artery Calcium (CAC) Score: determined using non-contrast ECG-gated computed tomography (CT). CAC score measures the amount of calcium deposits in the coronary arteries, a marker of atherosclerosis (plaque buildup).
Aneurysm and Atrial Fibrillation Detection: Also assessed via CT scanning. Atrial fibrillation is an irregular heartbeat that significantly increases stroke risk.
Ankle-Brachial Index (ABI): Measured blood pressure in the ankles and arms to detect peripheral artery disease (PAD) and hypertension.
Blood sample Analysis: Checked for diabetes mellitus and hypercholesterolemia (high cholesterol).
Based on the screening results, participants were prescribed appropriate treatments, including:
statins: To lower cholesterol levels.
Antithrombotic Agents: Aspirin or clopidogrel to prevent blood clots.
DANCAVAS 2: The Results
Despite the thorough screening process and subsequent treatment initiation, the DANCAVAS 2 trial did not* demonstrate a statistically significant reduction