期刊
STATISTICS AND COMPUTING
卷 15, 期 3, 页码 231-239出版社
SPRINGER
DOI: 10.1007/s11222-005-1311-z
关键词
censored survival data; regression tree; model selection; two-stage approach; subgroup analysis
The performance of computationally inexpensive model selection criteria in the context of tree-structured subgroup analysis is investigated. It is shown through simulation that no single model selection criterion exhibits a uniformly superior performance over a wide range of scenarios. Therefore, a two- stage approach for model selection is proposed and shown to perform satisfactorily. Applied example of subgroup analysis is presented. Problems associated with tree- structured subgroup analysis are discussed and practical solutions are suggested.
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