Abstract
In this article, we discuss testing for the effect of several covariates in the additive hazards regression model. Bhattacharyya and Klein (Statist. Med. 2005; 24(14):2235-2240) note that an ad hoc weight function suggested by Aalen (Statist. Med. 1989; 8:907-925) is inconsistent when used as a global test for comparing groups since the test statistic depends on which group is used as the baseline group. We will suggest a simple alternative test that does not exhibit this problem. This test is a natural extension of the logrank test. We shall also discuss an alternative covariance estimator. The tests are applied to a data set and a simulation study is performed.
Original language | English (US) |
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Pages (from-to) | 831-844 |
Number of pages | 14 |
Journal | Statistics in Medicine |
Volume | 27 |
Issue number | 6 |
DOIs | |
State | Published - Mar 15 2008 |
Keywords
- Additive model
- Logrank test
- Survival analysis
ASJC Scopus subject areas
- Epidemiology
- Statistics and Probability