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Updated: Jun 13, 2025

Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease
Published on: August 9, 2024
Quality of Life Outcomes With a Risk-Based Precision Testing Strategy Versus Usual Testing in Stable Patients With
Daniel B Mark1,2, Yanhong Li1, Michael G Nanna3
1Duke Clinical Research Institute, Duke University, Durham, NC (D.B.M., Y.L., M.D.K., M.R.D., M.R.P., K.N.B., S.V., P.S.D.).
In patients with stable chest pain, quality of life improved significantly within 6 months, regardless of whether they received precision diagnostic testing or usual care. Both strategies yielded similar health outcomes.
Area of Science:
- Cardiology
- Clinical Trials
- Health Outcomes Research
Background:
- The PRECISE trial evaluated a precision diagnostic testing strategy against usual testing in patients with stable chest pain and suspected coronary artery disease.
- Quality of Life (QOL) was a key secondary endpoint in this prospective randomized trial.
Purpose of the Study:
- To compare the QOL outcomes between a precision diagnostic testing strategy and usual testing in patients with stable chest pain.
- To assess the impact of different diagnostic strategies on patient-reported health status and satisfaction.
Main Methods:
- QOL was assessed using structured interviews, including the Seattle Angina Questionnaire (SAQ-19) and EQ-5D, at baseline and at 45 days, 6 months, and 12 months postrandomization.
- The primary QOL comparison focused on the 6-month SAQ Summary score, with high data collection rates ensuring robust analysis.
- Comparisons were performed based on the initial randomization assignment for each patient.
Main Results:
- Both the Precision Strategy and Usual Testing groups showed substantial improvements in mean SAQ Summary scores from baseline to 6 months.
- No statistically significant or clinically meaningful differences in SAQ scores or generic health status (EQ-5D) were observed between the two groups at any follow-up point.
- By 6 months, a similar proportion of patients (66%) in both groups were free of chest pain, and care satisfaction was high and comparable.
Conclusions:
- Angina-related and overall QOL significantly improved in stable patients with suspected coronary artery disease within the first 6 months.
- The observed QOL improvements were independent of the diagnostic testing strategy employed (precision vs. usual care).
- These findings suggest that current diagnostic approaches effectively manage QOL in this patient population.
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