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Performance of multivariable risk prediction algorithms in predicting COPD exacerbations: a population-based study.

Jeenat Mehareen¹, Laura Huey Mien Lim², Amin Adibi¹

¹The University of British Columbia Faculty of Pharmaceutical Sciences, Vancouver, British Columbia, Canada.

|June 24, 2026

Summary

A new tool, ACCEPT 3.0-UK, accurately predicts moderate/severe exacerbations in COPD patients. This improved risk stratification tool outperforms current methods for better patient management in primary care.

Keywords:

COPD Exacerbations

Related Experiment Videos

Area of Science:

Pulmonary Medicine
Clinical Epidemiology
Health Services Research

Background:

Accurate risk stratification is crucial for managing chronic obstructive pulmonary disease (COPD) exacerbations.
Current standard of care relies on exacerbation history, which may lack precision.
Multivariable risk scoring tools offer potential for improved prediction.

Purpose of the Study:

To compare the performance of exacerbation history with a revised multivariable risk scoring tool, the Acute COPD Exacerbation Prediction Tool (ACCEPT).
To develop and validate a UK-specific recalibrated version of the ACCEPT tool (ACCEPT 3.0-UK) for primary care settings.

Main Methods:

Utilized UK Clinical Practice Research Datalink Aurum data (2004-2020) with validated case definitions for COPD patients aged ≥40.
Conducted time-to-event analyses comparing ACCEPT 2.0 and a recalibrated version, ACCEPT 3.0-UK.
Evaluated model performance using discrimination (AUC), calibration (O/E ratio), and net benefit.

Main Results:

ACCEPT 2.0 showed an AUC of 0.77, outperforming exacerbation history categories.
Recalibration to ACCEPT 3.0-UK resolved overprediction (O/E ratio 1.00) while maintaining discrimination.
ACCEPT 3.0-UK demonstrated net benefit and superiority over exacerbation history across risk thresholds.

Conclusions:

ACCEPT 3.0-UK offers substantially higher performance for COPD exacerbation risk stratification compared to exacerbation history.
The tool quantifies predicted risks, facilitating shared decision-making between clinicians and patients.
ACCEPT 3.0-UK is likely to enhance clinical utility in primary care for COPD management.