title: Temporal abstraction and data mining with visualization of laboratory data.
abstract: To analyze the laboratory data by data mining, user-centered universal tools have not been available in medicine. We analyzed 1,565,877 laboratory data of 771 patients with viral hepatitis in order to find the difference of the temporal changes in laboratory test data between Hepatitis B and Hepatitis C by the combination of temporal abstraction and data mining. The data for one patient is temporal for more than 5 years. After pretreatment the data was converted to abstract patterns and then selected into sets of data combination and rules to identify Hepatitis B or C by D2MS and LUPC which were originally produced by ourselves. Not only data pattern, but also temporal relations were considered as a part of the rules. In the course of evaluating the results by domain experts, even though there were not so remarkable hypotheses, visualization tools made it easier for them to understand the relations of the complicated rules.
authors.affiliation: Division for Medical Informatics and Management, Chiba University Hospital, Inohana, Chuou-ku, Chiba, 260-8677 Japan.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Takabayashi
authors.forename: Tu Bao
authors.initials: TB
authors.lastname: Ho
authors.forename: Hideto
authors.initials: H
authors.lastname: Yokoi
authors.forename: Trong Dung
authors.initials: TD
authors.lastname: Nguyen
authors.forename: Saori
authors.initials: S
authors.lastname: Kawasaki
authors.forename: Si Quang
authors.initials: SQ
authors.lastname: Le
authors.forename: Takahiro
authors.initials: T
authors.lastname: Suzuki
authors.forename: Osamu
authors.initials: O
authors.lastname: Yokosuka
mesh_terms: D003626:Data Display; D006509:Hepatitis B / Q000175:diagnosis*; D006526:Hepatitis C / Q000175:diagnosis*; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods*; D008111:Liver Function Tests; D013997:Time Factors