Title

Tree-augmented Cox proportional hazards models

Authors

Authors

X. G. Su;C. L. Tsai

Comments

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Abbreviated Journal Title

Biostatistics

Keywords

BIC; censored survival times; Cox proportional hazards models; survival; trees; CORONARY HEART-DISEASE; STRUCTURED SURVIVAL ANALYSIS; WESTERN; COLLABORATIVE GROUP; FOLLOW-UP EXPERIENCE; REGRESSION; RESIDUALS; MORTALITY; GOODNESS; TESTS; Mathematical & Computational Biology; Statistics & Probability

Abstract

We study a hybrid model that combines Cox proportional hazards regression with tree-structured modeling. The main idea is to use step functions, provided by a tree structure, to 'augment' Cox (1972) proportional hazards models. The proposed model not only provides a natural assessment of the adequacy of the Cox proportional hazards model but also improves its model fitting without loss of interpretability. Both simulations and an empirical example are provided to illustrate the use of the proposed method.

Journal Title

Biostatistics

Volume

6

Issue/Number

3

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

486

Last Page

499

WOS Identifier

WOS:000230715600010

ISSN

1465-4644

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