Related Experiment Video
Updated: Jan 16, 2026

An R-Based Landscape Validation of a Competing Risk Model
Published on: September 16, 2022
Jcvrisk: An R Package for Population-level Estimation of Cardiovascular Risk Scores in Japanese Adults
Hiroshi Okumiyama1, Ryosuke Fujii1, Yoshiki Tsuboi1
1Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences.
A new R package, Jcvrisk, estimates cardiovascular disease (CVD) risk scores for Japanese adults. Despite stable risk factors, the Jcvrisk package revealed an increasing trend in 10-year CVD risk over 20 years.
Area of Science:
- Public Health
- Biostatistics
- Epidemiology
Background:
- Cardiovascular disease (CVD) is a major cause of mortality in Japan.
- Existing CVD risk scores lack population-level estimation tools for Japanese individuals.
- The Jcvrisk R package was developed to address this gap by integrating major Japanese CVD risk models.
Purpose of the Study:
- To develop and validate the Jcvrisk R package for estimating cardiovascular disease risk scores in the Japanese population.
- To apply the Jcvrisk package to a longitudinal study to assess trends in CVD risk.
Main Methods:
- Utilized longitudinal data from the Yakumo Study (2000-2020).
- Integrated four major Japanese CVD risk models (EPOCH, Hisayama, Suita, JALS) into the Jcvrisk package.
- Analyzed temporal trends in CVD risk scores by summarizing data every five years.
Main Results:
- The study population comprised individuals around 60 years old.
- Key risk factors like smoking prevalence and HDL-C showed minor changes over 20 years.
- All calculated CVD risk scores demonstrated a consistent upward trend in 10-year CVD risk.
Conclusions:
- The Jcvrisk R package provides essential functions for calculating CVD risk scores for Japanese adults.
- This tool is valuable for researchers and policymakers monitoring cardiovascular risk at individual and population levels in Japan.
Related Concept Videos
Relative Risk
Statistical Methods for Analyzing Epidemiological Data
Assessment of blood pressure in brachial artery(two-step method)
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Blood Studies for Cardiovascular System I: Cardiac Biomarkers
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...

