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Article type: Cover
2000 Volume 12 Issue 2 Pages
Cover1-
Published: October 31, 2000
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Article type: Cover
2000 Volume 12 Issue 2 Pages
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Published: October 31, 2000
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
App1-
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Article type: Index
2000 Volume 12 Issue 2 Pages
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Article type: Index
2000 Volume 12 Issue 2 Pages
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Tomoyuki Sugimoto, Masashi Goto
Article type: Article
2000 Volume 12 Issue 2 Pages
85-106
Published: October 31, 2000
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As a typical tool to explore prognosis factors of patients suffering from a disease such as cancer, some approaches based on the proportional hazards model(Cox, 1972)have been well-known in survival analysis. However, if the approaches based on the proportional hazards model are applied to survival data of a sample in which cured individuals are included without any device or adjustment of the models, reification of the analysis results may be depart from practical meanings. Therefore, when cured individuals are included in a sample, we discuss extension of Boag's model taking account of covariates on the proportional hazards model. The extension becomes an adjustment of the proportional hazards model. An inference procedure based on the adjustment is examined in a semi-parametric procedure. We propose its semi-parametric inference procedure, an approximate approach via the EM algorithm and some estimation methods of the survival function. Adequacy and usefulness of these proposals are indicated through numerical investigations, and possibilities that some useful views can be obtained are indicated in some case studies.
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Shuichi Shinmura, Tomoyuki Tarumi
Article type: Article
2000 Volume 12 Issue 2 Pages
107-123
Published: October 31, 2000
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In this paper, we introduce two optimal linear discriminant functions(OLDF) using IP and LP. Those are called IP-OLDF and LP-linear discriminant function. In order to evaluate these new methods with the Fisher's linear discriminant function(Fisher's method)and the quadratic discriminant function(Quadratic's methods), we had already applied these methods to the Iris data and the medical data. We generate 2-dimensional array having 400 rows by 2 columns. The normal random numbers generated by N(0, 2)are stored in the first column(variable x), N(0, 1)are stored in the second column(variable y). This array is considered as a data such as 400 cases having 2 variables. Each 100 case is used for the internal samples(G1, G2), and another 100 cases are used for the external samples(G3, G4)that correspond with (G1, G2). G1 and G3 are rotated from 0 degree to 30, 45, 60 and 90 degrees. G2 and G4 are added 23 sets of integer values such as (1, 1). So, 115 data sets are made by the original array as the internal samples and the external samples for the discriminant analysis. IP-OLDF, LP-OLDF, Fisher's method and Quadratic's method are applied to these data sets and the number of missclasified sample in each method are analyzed by several statistical methods, for instance, the elementary statistics, the Box-Whisker plot and the principal component analysis, etc. Finally, the regression model evaluates these miss-classify numbers. Those of LP, Fisher and Quadratic discriminant functions are regressed by IP-OLDF. For the internal samples, the order of the coefficients of determination given by regression for four methods is IP-OLDF < Quadratic's method < Fisher's method < LP-method. For the external samples, the order of four methods is Quadratic's method < IP-OLDF < Fisher's method < LP-method. These results are as same as t-test for the difference in the means.
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Tsunehisa Imada, Hideyuki Douke
Article type: Article
2000 Volume 12 Issue 2 Pages
125-135
Published: October 31, 2000
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The purpose of the present paper is to construct the group sequential procedure for testing sequentially the superiority and the inferiority between two treatments when a response is bivariate normal. It is based on the use of likelihood ratio method of our composite hypotheses in order to derive the statistic in the group sequential test. After the statistic is obtained, we construct the repeated confidence boundaries at each stage and the power of test by the recursive formulae of numerical integrations extended to two random variables. Then we investigate how the boundaries and the power of test are influenced by correlation coefficients through the simulations.
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Hiroyuki Minami, Yoshiro Yamamoto, Masahiro Mizuta, Yuichi Mori, Koji ...
Article type: Article
2000 Volume 12 Issue 2 Pages
137-143
Published: October 31, 2000
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The future planning Working Group(organized in 1997)offered the Society that we should have an Online Symposium with the Internet. According to this offer, the WG for Online event was organized and planned how to hold it. We set up the Web pages, some of which has facilities to read, write a comment directly in the pages. We asked 3 professors as "anonymous" panelers and offered to give us a kick-off comment along with our theme "Education on Statistics". We uploaded these comments on the Web and the participants replied to the comment and made comment-trees. In August, we asked the panelers to give a related comment against comments on the Web. Finally, we concluded this event in the 13th Symposium of the Society, revealing all panelers. In the event, we succeeded in holding some kinds of discussions on the Web. There are, however, still a few problems with this approach.
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
144-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
144-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
144-145
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
145-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
145-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2000 Volume 12 Issue 2 Pages
145-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
145-146
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
146-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
146-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
146-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
146-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
146-147
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2000 Volume 12 Issue 2 Pages
147-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
147-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
147-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
147-148
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
148-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
148-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
148-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2000 Volume 12 Issue 2 Pages
148-149
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
149-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
149-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
149-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
149-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
150-
Published: October 31, 2000
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A.J. Hayter, Tetsuhisa Miwa, Wei Liu
Article type: Article
2000 Volume 12 Issue 2 Pages
150-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
150-
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
150-151
Published: October 31, 2000
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
151-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
151-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
151-
Published: October 31, 2000
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[in Japanese], [in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
151-
Published: October 31, 2000
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[in Japanese]
Article type: Article
2000 Volume 12 Issue 2 Pages
151-152
Published: October 31, 2000
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Article type: Bibliography
2000 Volume 12 Issue 2 Pages
153-156
Published: October 31, 2000
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Kikuo Yanagi
Article type: Article
2000 Volume 12 Issue 2 Pages
157-
Published: October 31, 2000
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
158-
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
159-
Published: October 31, 2000
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
160-
Published: October 31, 2000
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
161-
Published: October 31, 2000
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
162-
Published: October 31, 2000
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Article type: Appendix
2000 Volume 12 Issue 2 Pages
App2-
Published: October 31, 2000
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