## Nonparametric Estimation in Cox-models: Time Transformation Methods versus Partial Likelihood Methods

- Jan Terje Kval
- 1999

A new approach for constructing tests for covariate eeect, i.e. association between a random right censored life time variable and a covariate, is proposed. The basic idea is to rst arrange the observations in increasing order of the covariate and then base the test for covariate eeect on a certain point process deened by the observation times. Testsâ€¦Â (More)

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