Yoo Jae Keun, Lee Keunbaik
Department of Statistics, Ewha Womans University, Seoul, 120-750, Republic of Korea.
Lifetime Data Anal. 2011 Jul;17(3):433-44. doi: 10.1007/s10985-010-9187-4. Epub 2010 Nov 4.
In this article, we test the effects of predictors in survival regression through two well-known sufficient dimension reduction methods. Since the usual sufficient dimension reduction methods do not require pre-specified models, the predictor effect tests can be considered model-free. All of the test statistics have χ (2) distributions. Numerical studies of the proposed predictor effect tests in various simulations and real data application are presented.
在本文中，我们通过两种著名的充分降维方法来检验生存回归中预测变量的效应。由于常用的充分降维方法不需要预先指定模型，因此预测变量效应检验可被视为无模型的。所有检验统计量都服从χ(2)分布。本文给出了在各种模拟和实际数据应用中对所提出的预测变量效应检验的数值研究。
