Statistical assessment for risk prediction of endoleak formation after tevar based on linear discriminant analysis

Kuniyoshi Hayashi, Fumio Ishioka, Bhargav Raman, Daniel Y. Sze, Hiroshi Suito, Takuya Ueda, Koji Kurihara

研究成果: Conference contribution

抄録

Over the past decade, therapy for thoracic aneurysms involving the use of a stent-graft has gained popularity as an alternate therapy for surgical treatment. This therapy is considered to be safe and efficient, and realizes satisfactory shortto- midterm results. However, a clinical side effect called endoleak has often been observed after alternate therapy. Based on the empirical findings of doctors, if a stent-graft is inserted into the part of the large curvature on the aortic angiography of a patient, it is believed that there is an increased risk of endoleak formation. To understand the relationship between the risk and the aortic curvature, we set a two-class discriminant problem involving no-endoleak and endoleak groups, and apply linear discriminant analysis to the two-class discriminant problem with a quantitative dataset that is associated with the curvature of aortic angiography and the insertion position of a stent-graft. Next, we propose a procedure for the diagnostics based on the sign of the sample influence function for the average discriminant score in each class. In addition, we apply our proposed diagnostic procedure to the prediction result of the two-class linear discriminant analysis, and detect large influential individuals for the improvement of the prediction accuracy for endoleak groups. With our approach, we determine the relation between the curvature of the aorta and the risk of endoleak formation.

本文言語English
ホスト出版物のタイトルAnalysis and Modeling of Complex Data in Behavioral and Social Sciences
編集者Akinori Okada, Claus Weihs, Donatella Vicari, Giancarlo Ragozini
出版社Kluwer Academic Publishers
ページ143-151
ページ数9
ISBN(印刷版)9783319066912
DOI
出版ステータスPublished - 2014
外部発表はい
イベントJoint international meeting on Japanese Classification Society and the Classification and Data Analysis Group of the Italian Statistical Society, JCS-CLADAG 2012 - Capri Island, Italy
継続期間: 2012 9月 32012 9月 4

出版物シリーズ

名前Studies in Classification, Data Analysis, and Knowledge Organization
49
ISSN(印刷版)1431-8814

Other

OtherJoint international meeting on Japanese Classification Society and the Classification and Data Analysis Group of the Italian Statistical Society, JCS-CLADAG 2012
国/地域Italy
CityCapri Island
Period12/9/312/9/4

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 情報システム
  • 情報システムおよび情報管理
  • 分析

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