Longitudinal Validation of the RADAR Score in Primary Care: Prognostic Value for Exacerbations and Short-term Changes...

Area of Science:

• Pulmonology
• Primary Care Medicine
• Clinical Risk Assessment

Background:

• The longitudinal validity of the RADAR score for predicting short-term risk in primary care is unestablished.
• Real-world data is needed to evaluate its prognostic performance for adverse events in COPD patients.

Purpose of the Study:

• To evaluate the prognostic performance of the RADAR score for adverse events in primary care.
• To describe short-term changes in COPD control status and patient-reported health status.

Main Methods:

• A multicenter study of 706 primary care patients with COPD on triple therapy.
• Assessment at baseline and after a median 91-day follow-up.
• Analysis of RADAR score (≥4 vs <4) association with 3-month outcomes and changes in RADAR (ΔRADAR) and COPD Assessment Test (ΔCAT) scores.

Main Results:

• Baseline poor control (RADAR ≥4) strongly predicted severe exacerbations (OR, 3.75) and composite events (OR, 1.72).
• Each 1-point RADAR increase was linked to a 21% higher rate of moderate exacerbations (IRR, 1.21).
• Patients with RADAR ≥4 had worse airflow limitation, active smoking, higher symptoms, and poorer adherence.

Conclusions:

• The RADAR score effectively predicts short-term clinical risk in primary care.
• It serves as a practical tool for monitoring COPD and guiding clinical decisions.
• The score demonstrates prognostic value for identifying high-risk patients needing further assessment.