Novel multiclass classification for home-based diagnosis of sleep apnea hypopnea syndrome

Authors:
D. Sánchez-Morillo;M. A. López-Gordo;A. León
Affiliations:
Biomedical Engineering and Telemedicine Lab, School of Engineering, University of Cádiz, C/Chile, 1, 11003 Cádiz, Spain;Biomedical Engineering and Telemedicine Lab, School of Engineering, University of Cádiz, C/Chile, 1, 11003 Cádiz, Spain;Pulmonology and Allergy Unit, Puerta del Mar University Hospital, 11009 Cádiz, Spain
Venue:
Expert Systems with Applications: An International Journal
Year:
2014

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Abstract

Currently, Sleep Apnea-Hypopnea Syndrome (SAHS) is accurately diagnosed in Sleep Units. In the last decade, in order to reduce the burden for health systems and the consequent impact in patients, several home-located methods based on the binary classification of SAHS using overnight pulse oximetry (SpO"2) have been proposed. Binary classifiers give rise to higher accuracies, but the cost of misclassifying leads to high penalizations in terms of either health care costs or risks in patient's health. This study presents a novel hierarchical classification scheme for the four-class SAHS diagnosis using a set of features extracted from SpO"2 and reported in specialized literature. An accuracy of 82.6% was achieved in the assessment of the four-class classification. The proposed method could be useful in the diagnosis of SAHS in an ambulatory home-based setting and could alleviate under-diagnosis rate and the waiting lists in sleep units.