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External validation of the GRACE Freedom from Events score
Anne-Maree Kelly1, Prashant Dabee, Sharon Klim
1Joseph Epstein Centre for Emergency Medicine at Western Health, Sunshine Hospital, Furlong Road, St Albans 3021, Australia. anne-maree.kelly@wh.org.au
Heart, Lung & Circulation
|June 20, 2012
Summary
The GRACE Freedom-from-Event Score (GFFES) accurately identifies low-risk acute coronary syndrome patients, showing no major adverse cardiac events in this group. This score is a valuable tool for risk stratification in cardiology.
Area of Science:
- Cardiology
- Clinical Risk Prediction
Background:
- Acute coronary syndrome (ACS) presents a significant threat, yet most patients have a low risk of adverse events.
- The GRACE Freedom-from-Event Score (GFFES) was developed in 2005 to identify low-risk ACS patients.
Purpose of the Study:
- To externally validate the predictive performance of the GFFES in a real-world clinical setting.
- To assess the GFFES's ability to identify patients at low risk for major adverse cardiac events (MACE).
Main Methods:
- A prospective observational cohort study included 238 patients admitted with chest pain, unstable angina, or myocardial infarction (MI).
- Data on clinical factors and investigations were collected.
- Major adverse cardiac events (MACE) were defined as death, new MI, stroke, and other severe complications during index admission. Predictive performance was analyzed using ROC curves.
Main Results:
- 32.8% of patients were classified as low risk (GFFES score ≥287).
- No MACE occurred in the low-risk group.
- The GFFES demonstrated good predictive performance with an AUC of 0.74, 100% sensitivity, and 100% negative predictive value for MACE.
Conclusions:
- The GFFES showed good discrimination, sensitivity, and negative predictive value in this external validation.
- The score may serve as a useful tool for risk-based patient management and care allocation in ACS.
- Further multi-center validation could strengthen its clinical utility.
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