Bilder C R, Loughin T M
Department of Statistics, Oklahoma State University, Stillwater 74078, USA.
Biometrics. 2001 Dec;57(4):1253-5. doi: 10.1111/j.0006-341x.2001.01253.x.
Decady and Thomas (2000, Biometrics 56, 893-896) propose a first-order corrected Umesh-Loughin-Scherer statistic to test for association in an r x c contingency table with multiple column responses. Agresti and Liu (1999, Biometrics 55, 936-943) point out that such statistics are not invariant to the arbitrary designation of a zero or one to a positive response. This paper shows that, in addition, the proposed testing procedure does not hold the correct size when there are strong pairwise associations between responses.
迪卡迪和托马斯(2000年,《生物统计学》56卷,第893 - 896页)提出了一种一阶校正的乌梅什 - 洛金 - 谢勒统计量,用于检验具有多个列响应的r×c列联表中的关联性。阿格雷斯蒂和刘(1999年,《生物统计学》55卷,第936 - 943页)指出,这类统计量对于将正响应任意指定为零或一并不具有不变性。本文还表明,当响应之间存在强成对关联时,所提出的检验程序并不具有正确的显著性水平。