Convert Coronary Artery Calcium Score (CAC) to Arterial Age.

Arterial age provides a convenient transformation of coronary artery calcium (CAC) from Agatston units to age units, to a scale more easily appreciated by both patients and treating physicians. The arterial age for a participant is the age at which the estimated CHD risk (modeled as a function of age) is the same as that for the observed CAC score. Arterial age is then the risk-equivalent of coronary artery calcium. This measure can be considered a more easily understandable version of the CAC score (e.g. you are 55 years old, but your arteries are more consistent with an arterial age of 65 years).

This tool will calculate an estimated arterial age (and 95% confidence interval) given a CAC score input by the user.

References:
Robyn L. McClelland, PhD, Khurram Nasir, MD, MPH, Matthew Budoff, MD, Roger S. Blumenthal, MD, and Richard A. Kronmal, PhD.
Arterial Age as a Function of Coronary Artery Calcium (from the Multi-Ethnic Study of Atherosclerosis [MESA]), Am J Cardiol. 2009 January 1; 103(1): 59–63

McClelland RL, Chung H, Detrano R, Post W, Kronmal RA.
Distribution of coronary artery calcium by race, gender, and age: results from the Multi-Ethnic Study of Atherosclerosis (MESA).
Circulation. 2006;113(1):30-37.

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