計量生物学
Online ISSN : 2185-6494
Print ISSN : 0918-4430
ISSN-L : 0918-4430
14 巻 , 1.2 号
選択された号の論文の4件中1~4を表示しています
原著
  • ゼナイダ F·マテオ, 尾高 好政, 田中 豊
    1993 年 14 巻 1.2 号 p. 1-15
    発行日: 1993/09/30
    公開日: 2012/02/23
    ジャーナル フリー
    There are several sensitivity analysis procedures which have been considered by Tanaka and Okada (1989 a, b, c) to investigate the phenomena of how a small change of data affects the outcome of factor analysis. Among them are those for principal factor analysis (PFA), maximum likelihood factor analysis (MLFA) and least square factor analysis (LSFA). This motivates us to show that a similar technique can also be utilized to develop the sensitivity analysis in alpha factor analysis (AFA). Some examples are explained to illustrate the present procedure and a comparison is made in particular with the cases of PFA and MLFA.
総説
  • 折笠 秀樹
    1993 年 14 巻 1.2 号 p. 17-30
    発行日: 1993/09/30
    公開日: 2012/02/23
    ジャーナル フリー
    This paper critically revicws two important concepts which should be considered even in the analysis of clinical trials. These are interaction and confounding. Both must often be a great burden for the interpretation. It may be more difficult to detect the existence of confounding than interaction. It is noticed that testing for the imbalance of baselinc factors is a part of the check for confounding. It illustrates a realistic situation in which both confounding and interaction are involved. Tests for interaction are shown as the basis of odds ratio, risk ratio and risk difference, with an empirical comparison. Finally, testing for qualitative interactions is discussed for a possiblc application.
研究速報
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