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CHARM

Online

Risk Calculator

What is CHARM?

The Comprehensive Health and Risk Manager (CHARM) is a computer program that estimates life expectancy and risk of death from 270 diseases, based on a person’s risk profile.

Estimation starts with the specification of age and sex, and the values of 60 risk factors (e.g., systolic blood pressure, smoking, fruit consumption, physical activity, air pollution, etc.). If the value of a risk factor (e.g., cholesterol level) is not known, the program will assume the average value for the population. For each risk factor, the relative risk of death from each disease is calculated relative to the country-specific average exposure (e.g., average blood pressure).

The program uses information on disease-specific death rates by age and sex, age/sex-specific distributions of risk factors in the population, and age/sex-specific relative risk of death for all disease-risk combinations to create a life-table for people like the user, that is, males or females the same age, with the values of the risk factors (risk profile) entered by the user. Once the risk of death and life expectancy have been calculated, the user may enter new values of the risk factor(s) to see the effect of changes in one or more risk factors on life expectancy. The new life expectancy is calculated assuming a gradual change in risk following a change in exposure to the risk factor(s).

How can I access CHARM?

CHARM can be accessed free through the online Research Survey System (RSS) hosted on a secure server at Arthritis Research Canada. To obtain access, click here.

More information about CHARM and the impact of various risk factors on life expectancy can be found in an article published in the International Journal of Environmental Research and Public Health. To access this article, please click here.

Reference

Kopec JA, Sayre EC, Shams B, Li LC, Xie H, Feehan LM, Esdaile JM. The Impact of 51 Risk Factors on Life Expectancy in Canada: Findings from a New Risk Prediction Model Based on Data from the Global Burden of Disease Study. Int J Environ Res Public Health. 2022;19(15):8958.

All of our Tools and Instruments are covered by this disclaimer:
While we make every effort to deliver high quality solutions, we do not guarantee that these tools or instruments are free from defects. Our tools and instruments are provided “as is,” and you use them at your own risk. We make no warranties as to performance, merchantability, fitness for a particular purpose, or any other warranties whether expressed or implied. No oral or written communication from or information provided by Arthritis Research Canada or the authors of these tools or instruments shall create a warranty. Under no circumstances shall Arthritis Research Canada or the authors of these tools or instruments be liable for direct, indirect, special, incidental, or consequential damages resulting from the use, misuse, or inability to use these tools or instruments, even if Arthritis Research Canada or the authors of these tools or instruments have been advised of the possibility of such damages.
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