Variable selection in the cox regression model with covariates missing at random.
Variable selection in the cox regression model with covariates missing at random.
复制标题
DOI:
10.1111/j.1541-0420.2009.01274.x
复制
发表时间:
2010-03
期刊:
影响因子:
1.9
通讯作者:
Zhu H
中科院分区:
文献类型:
--
作者:
Garcia RI;Ibrahim JG;Zhu H
We consider variable selection in the Cox regression model (, Biometrika 362, 269–276) with covariates missing at random. We investigate the smoothly clipped absolute deviation penalty and adaptive least absolute shrinkage and selection operator (LASSO) penalty, and propose a unified model selection and estimation procedure. A computationally attractive algorithm is developed, which simultaneously optimizes the penalized likelihood function and penalty parameters. We also optimize a model selection criterion, called the ICQ statistic (, Journal of the American Statistical Association 103, 1648–1658), to estimate the penalty parameters and show that it consistently selects all important covariates. Simulations are performed to evaluate the finite sample performance of the penalty estimates. Also, two lung cancer data sets are analyzed to demonstrate the proposed methodology.
登录
查看更多内容
影响因子:
2.7
作者:
Wang, Hansheng;Li, Runze;Tsai, Chih-Ling
通讯作者:
Tsai, Chih-Ling
影响因子:
4.5
作者:
Zou, Hui;Li, Runze
通讯作者:
Li, Runze
影响因子:
2.7
作者:
Paik, MC;Tsai, WY
通讯作者:
Tsai, WY
影响因子:
45.3
作者:
Socinski, MA;Schell, MJ;Kies, MS
通讯作者:
Kies, MS
DOI:
10.1198/016214501753208942
发表时间:
2001-09-01
影响因子:
3.7
作者:
Antoniadis, A;Fan, JQ
通讯作者:
Fan, JQ