Use of data mining techniques to determine and predict length of stay of cardiac patients

• Published in: Healthcare informatics research 2013, 19(2), , pp.121-129
• Main Authors: Hachesu, Peyman Rezaei, Ahmadi, Maryam, Alizadeh, Somayyeh, Sadoughi, Farahnaz
• Format: Article
• Language: English
• Subjects: coronary artery disease; data mining; extract; length of stay; Original; patients; 예방의학
• ISSN: 2093-3681; 2093-369X
• DOI: 10.4258/hir.2013.19.2.121

Predicting the length of stay (LOS) of patients in a hospital is important in providing them with better services and higher satisfaction, as well as helping the hospital management plan and managing hospital resources as meticulously as possible. We propose applying data mining techniques to extract useful knowledge and draw an accurate model to predict the LOS of heart patients. Data were collected from patients with coronary artery disease (CAD). The patient records of 4,948 patients who had suffered CAD were included in the analysis. The techniques used are classification with three algorithms, namely, decision tree, support vector machines (SVM), and artificial neural network (ANN). LOS is the target variable, and 36 input variables are used for prediction. A confusion matrix was obtained to calculate sensitivity, specificity, and accuracy. The overall accuracy of SVM was 96.4% in the training set. Most single patients (64.3%) had an LOS ≤5 days, whereas 41.2% of married patients had an LOS >10 days. Moreover, the study showed that comorbidity states, such as lung disorders and hemorrhage with drug consumption have an impact on long LOS. The presence of comorbidities, an ejection fraction