Missing data imputation for remote CHF patient monitoring systems

Congestive heart failure (CHF) is a leading cause of death in the United States. WANDA is a wireless health project that leverages sensor technology and wireless communication to monitor the health status of patients with CHF. The first pilot study of WANDA showed the system's effectiveness for...

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Bibliographic Details
Main Authors: Myung-kyung Suh, Woodbridge, J., Lan, M., Bui, A., Evangelista, L. S., Sarrafzadeh, M.
Format: Conference Proceeding
Language:English
Subjects:
Accuracy
Bayesian methods
Biomedical monitoring
Blood pressure
Heart
Monitoring
Training
Online Access:Request full text
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Description
Summary:Congestive heart failure (CHF) is a leading cause of death in the United States. WANDA is a wireless health project that leverages sensor technology and wireless communication to monitor the health status of patients with CHF. The first pilot study of WANDA showed the system's effectiveness for patients with CHF. However, WANDA experienced a considerable amount of missing data due to system misuse, nonuse, and failure. Missing data is highly undesirable as automated alarms may fail to notify healthcare professionals of potentially dangerous patient conditions. In this study, we exploit machine learning techniques including projection adjustment by contribution estimation regression (PACE), Bayesian methods, and voting feature interval (VFI) algorithms to predict both non-binomial and binomial data. The experimental results show that the aforementioned algorithms are superior to other methods with high accuracy and recall. This approach also shows an improved ability to predict missing data when training on entire populations, as opposed to training unique classifiers for each individual.
ISSN:1094-687X
1558-4615
2694-0604
DOI:10.1109/IEMBS.2011.6090867