Cited by 402Artificial Intelligence in HealthcareHeart Failure Treatment and ManagementMachine Learning in Healthcare

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Analysis of Machine Learning Techniques for Heart Failure Readmissions

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Mortazavi, Bobak J., Downing, Nicholas S., Bucholz, Emily M., Dharmarajan, Kumar, Manhapra, Ajay, Li, Shu-Xia, Negahban, Sahand N., Krumholz, Harlan M.·2016·Circulation: Cardiovascular Quality and Outcomes

DOI 10.1161/circoutcomes.116.003039PMC PMC5459389

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Abstract

Background—: The current ability to predict readmissions in patients with heart failure is modest at best. It is unclear whether machine learning techniques that address higher dimensional, nonlinear relationships among variables would enhance prediction. We sought to compare the effectiveness of several machine learning algorithms for predicting readmissions. Methods and Results—: Using data from the Telemonitoring to Improve Heart Failure Outcomes trial, we compared the effectiveness of random forests, boosting, random forests combined hierarchically with support vector machines or logistic regression (LR), and Poisson regression against traditional LR to predict 30- and 180-day all-cause readmissions and readmissions because of heart failure. We randomly selected 50% of patients for a derivation set, and a validation set comprised the remaining patients, validated using 100 bootstrapped iterations. We compared C statistics for discrimination and distributions of observed outcomes in risk deciles for predictive range. In 30-day all-cause readmission prediction, the best performing machine learning model, random forests, provided a 17.8% improvement over LR (mean C statistics, 0.628 and 0.533, respectively). For readmissions because of heart failure, boosting improved the C statistic by 24.9% over LR (mean C statistic 0.678 and 0.543, respectively). For 30-day all-cause readmission, the observed readmission rates in the lowest and highest deciles of predicted risk with random forests (7.8% and 26.2%, respectively) showed a much wider separation than LR (14.2% and 16.4%, respectively). Conclusions—: Machine learning methods improved the prediction of readmission after hospitalization for heart failure compared with LR and provided the greatest predictive range in observed readmission rates.

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Authors: Mortazavi, B. J., Downing, N. S., Bucholz, E. M., Dharmarajan, K., Manhapra, A., Li, S.-X., Negahban, S. N., & Krumholz, H. M.
Affiliations: Yale New Haven Hospital (US)
ORCID: Mortazavi, Bobak J.
Bucholz, Emily M.
Manhapra, Ajay
Li, Shu-Xia
Krumholz, Harlan M.
Venue: Circulation: Cardiovascular Quality and Outcomes
Publisher: Ovid Technologies (Wolters Kluwer Health)
Published: 2016-11
Volume: 9
Issue: 6
Pages: 629-640
ISSN: 1941-7705 (ISSN-L)
1941-7713
DOI: 10.1161/circoutcomes.116.003039
PMC: PMC5459389
OpenAlex: W2549885908
Cited by: 401
References: 46
Citations by year: 2026: 30 · 2025: 38 · 2024: 46 · 2023: 48 · 2022: 41 · 2021: 68 · 2020: 54 · 2019: 44 · 2018: 23 · 2017: 7 · 2016: 2
FWCI: 43.12
Type: journal article
Language: en
Open access: bronze
doi.org
Locations: Circulation Cardiovascular Quality and Outcomes (publishedVersion)
PubMed (publishedVersion)
Europe PMC (PubMed Central) (acceptedVersion)
PubMed Central (acceptedVersion)
Funders: American Federation for Aging Research
Yale University
National Institute on Aging (K23AG048331)
National Heart, Lung, and Blood Institute (U01HL105270, R01HL080228)
National Institute on Drug Abuse (R25DA033211)
Topics: Health Sciences › Health Professions › Health Information Management › Artificial Intelligence in Healthcare
Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Failure Treatment and Management
Physical Sciences › Computer Science › Artificial Intelligence › Machine Learning in Healthcare
Keywords: heart failure, hospital readmission prediction, machine learning, random forest, boosting, support vector machine, Poisson regression, logistic regression, all-cause readmission, heart failure readmission, remote patient monitoring, risk prediction
MeSH terms: Aged, Algorithms, Female, Heart Failure, Humans, Male, Middle Aged, Patient Readmission, Risk Factors, Time Factors, Reproducibility of Results, Logistic Models, Randomized Controlled Trials as Topic, Databases, Factual, Telemedicine, Nonlinear Dynamics, Risk Assessment, Data Mining, Support Vector Machine

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Analysis of Machine Learning Techniques for Heart Failure Readmissions

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