Predicting atrial fibrillation in primary care using machine learning

English version

Autoři: Nathan R. Hill ^aff001; Daniel Ayoubkhani ^aff002; Phil McEwan ^aff002; Daniel M. Sugrue ^aff002; Usman Farooqui ^aff001; Steven Lister ^aff001; Matthew Lumley ^aff003; Ameet Bakhai ^aff004; Alexander T. Cohen ^aff005; Mark O’Neill ^aff006; David Clifton ^aff007; Jason Gordon ^aff002
Působiště autorů: Bristol-Myers Squibb Pharmaceutical Ltd, Uxbridge, United Kingdom ^aff001; Health Economics and Outcomes Research Ltd, Cardiff, United Kingdom ^aff002; Pfizer Ltd, Surrey, United Kingdom ^aff003; Department of Cardiology, Royal Free Hospital, London, United Kingdom ^aff004; Department of Haematological Medicine, Guys and St Thomas' NHS Foundation Trust, King's College London, London, United Kingdom ^aff005; Division of Cardiovascular Medicine, Guys and St Thomas' NHS Foundation Trust, King's College London, London, United Kingdom ^aff006; Department of Engineering Science, University of Oxford, Oxford, United Kingdom ^aff007
Vyšlo v časopise: PLoS ONE 14(11)
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.pone.0224582

Souhrn

Background

Atrial fibrillation (AF) is the most common sustained heart arrhythmia. However, as many cases are asymptomatic, a large proportion of patients remain undiagnosed until serious complications arise. Efficient, cost-effective detection of the undiagnosed may be supported by risk-prediction models relating patient factors to AF risk. However, there exists a need for an implementable risk model that is contemporaneous and informed by routinely collected patient data, reflecting the real-world pathology of AF.

Methods

This study sought to develop and evaluate novel and conventional statistical and machine learning models for risk-predication of AF. This was a retrospective, cohort study of adults (aged ≥30 years) without a history of AF, listed on the Clinical Practice Research Datalink, from January 2006 to December 2016. Models evaluated included published risk models (Framingham, ARIC, CHARGE-AF), machine learning models, which evaluated baseline and time-updated information (neural network, LASSO, random forests, support vector machines), and Cox regression.

Results

Analysis of 2,994,837 individuals (3.2% AF) identified time-varying neural networks as the optimal model achieving an AUROC of 0.827 vs. 0.725, with number needed to screen of 9 vs. 13 patients at 75% sensitivity, when compared with the best existing model CHARGE-AF. The optimal model confirmed known baseline risk factors (age, previous cardiovascular disease, antihypertensive medication usage) and identified additional time-varying predictors (proximity of cardiovascular events, body mass index (both levels and changes), pulse pressure, and the frequency of blood pressure measurements).

Conclusion

The optimal time-varying machine learning model exhibited greater predictive performance than existing AF risk models and reflected known and new patient risk factors for AF.

Klíčová slova:

Atrial fibrillation – Blood pressure – Heart failure – Hypertension – Machine learning – Medical risk factors – Neural networks – Primary care

Zdroje

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Predicting atrial fibrillation in primary care using machine learning

Souhrn

Background

Methods

Results

Conclusion

Klíčová slova:

Zdroje

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