DATA MINING APPROACH FOR IN-HOSPITAL TREATMENT OUTCOME IN PATIENTS WITH ACUTE CORONARY SYNDROME.
2015
Introduction. Risk stratification is nowadays crucial when estimating the
patient’s prognosis in terms of treatment outcome and it also helps in
clinical decision making. Several risk assessment models have been developed
to predict short-term outcomes in patients with acute coronary syndrome. This
study was aimed at developing an outcome prediction model for patients with
acute coronary syndrome submitted to percutaneus coronary intervention using
data mining approach. Material and Methods. A total of 2030 patients
hospitalized for acute coronary syndrome and treated with percutaneous
coronary intervention from December 2008 to December 2011 were assigned to a
derivation cohort. Demographic and anamnestic data, clinical characteristics
on admission, biochemical analysis of blood parameters on admission, and left
ventricular ejection fraction formed the basis of the study. A number of
machine learning algorithms available within Waikato Environment for
Knowledge Discovery had been evaluated and the most successful was chosen.
The predictive model was subsequently validated in a different population of
931 patients (validation cohort), hospitalized during 2012. Results. The best
prediction results were achieved using Alternating Decision Tree classifier,
which was able to predict in-hospital mortality with 89% accuracy, and
preserved good performance on validation cohort with 87% accuracy.
Alternating Decision Tree classifier identified a subset of 6 attributes most
relevant to mortality prediction: systolic and diastolic blood pressure,
heart rate, left ventricular ejection fraction, age, and troponin value.
Conclusion. Data mining approach enabled the authors to develop a model
capable of predicting the in-hospital outcome following percutaneous coronary
intervention. The model showed excellent sensitivity and specificity during
internal validation.
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