Related Experiment Video
Updated: Jun 3, 2026
Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease
Published on: August 9, 2024
Performance of current guidelines for coronary heart disease prevention: optimal use of the Framingham-based risk
Timothy P Murphy1, Rajoo Dhangana, Michael J Pencina
1Vascular Disease Research Center, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903, United States. tmurphy@lifespan.org
Insights
The Framingham Risk Score (FRS) has low sensitivity for predicting hard coronary heart disease (hCHD) events at the standard 20% threshold. Lowering the threshold to 5% significantly improves prediction sensitivity for cardiovascular disease risk.
Area of Science:
- Cardiology
- Preventive Medicine
- Epidemiology
Background:
- Framingham Risk Score (FRS) strongly associates with hard coronary heart disease (hCHD) incidence.
- Current guidelines recommend intensive risk factor modification for individuals with a ≥20% 10-year hCHD risk.
- The predictive performance of FRS in clinical practice needs evaluation.
Purpose of the Study:
- To assess the performance of the Framingham Risk Score (FRS) as a predictive tool for hard coronary heart disease (hCHD) events.
- To evaluate the effectiveness of the current ≥20% 10-year risk threshold for intensive medical intervention.
Main Methods:
- Retrospective analysis of Atherosclerosis Risk in Communities (ARIC) and Cardiovascular Health Study (CHS) cohorts.
- Calculation of FRS for 11,436 (ARIC) and 2569 (CHS) participants without prior cardiovascular disease or diabetes.
- Utilized Receiver Operating Characteristic (ROC) curves to determine sensitivity, specificity, and accuracy at various 10-year risk thresholds for hCHD events (MI or coronary death).
Main Results:
- FRS showed significant association with hCHD events, with AUCs of 0.77 (ARIC) and 0.68 (CHS).
- At the conventional ≥20% 10-year risk threshold, FRS sensitivity was low (13% ARIC, 25% CHS).
- Lowering the threshold to >5% risk significantly increased sensitivity (75% ARIC, 83% CHS) with moderate specificity (66% ARIC, 40% CHS).
Conclusions:
- The standard 20% 10-year risk threshold for FRS demonstrates low sensitivity in identifying individuals at high risk for hCHD events.
- Lowering the FRS threshold to 5% substantially enhances sensitivity for predicting hCHD events with acceptable specificity.
- Adjusting the FRS threshold may improve the effectiveness of intensive medical risk factor modification strategies.
Background:
There is a strong positive association between Framingham Risk Scores (FRS) in a population and incidence of hard coronary heart disease (hCHD) events. Under current Adult Treatment Panel III guidelines, individuals with FRS that indicate ≥20% 10-year risk of hCHD are recommended to receive intensive medical risk factor modification. We sought to assess the performance of FRS as a predictive tool when used as in current guidelines.
Methods:
A retrospective analysis of two prospective cohort studies, the Atherosclerosis Risk in Communities (ARIC) study, and Cardiovascular Health Study (CHS), including 11,436 and 2569 participants, respectively, without known cardiovascular disease or diabetes at baseline, with available FRS variables were analyzed. The FRS was computed according to standard algorithm. The main outcome was hCHD event defined as MI or coronary death. Using Receiver Operating Characteristics (ROC) curves, sensitivity, specificity, accuracy and other test performance characteristics were determined at various 10-year risk thresholds. ROC curves were plotted.
Results:
During 10-year follow-up, 822 hCHD events occurred. FRS was significantly associated with hCHD with an AUC of 0.77 and 0.68 for ARIC and CHS, respectively (p-values <0.0001). However, at standard "high risk" cut-off (≥20%), the sensitivity of FRS was only 13% and 25%, respectively and Youden's Index was only 0.10 and 0.15. Lowering the 10-year risk threshold to >5% improved prediction sensitivity to 75% and 83%, with specificity of 66% and 40%, respectively.
Conclusion:
When used dichotomously as in current guidelines, sensitivity of the conventional 20% 10-year risk threshold for subsequent hCHD events is quite low. Since the 20% 10-year risk threshold for intensive medical risk factor therapy is on the steep part of the ROC curve, lowering the threshold results in substantial increases in sensitivity with much smaller losses in specificity, even to a threshold as low as 5%.
Related Concept Videos
01:26Coronary Artery Disease IV: Preventive Measures
01:25Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
01:26Atherosclerosis III: Management
01:27Coronary Artery Disease V: Interprofessional Care
01:30Coronary Artery Disease I: Introduction
01:26Angina IV: Management