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Since the development of the Internet boom ,technology evolution and progress of the times,that let people not only simply record the information ,but also have to know how to use these information to discover potential knowledge,or through the existing facts to predict more information on the contribution to society .
National Health Insurance Research Database (NHIRD),The paper grounds the source database provided by the National Health Insurance Research Database of National Health Insurance Bureau Since inception in 1995, has accumulated considerable database, covering more than 95% of the country''s population have joined the medical insurance system , so the data is quite considerable representative.
This paper uses data mining techniques in the classification model,the most important is the use of decision tree to construct a disease complication prediction model , It can determine the patient has a disease under the premise that the probability of a further risk of complications, we further analyze what is the most important factor ,Finally, this model can predict the time concurrent complications .
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