Abstract:
A new flexible and simple semiparametric model including the cases when hazard rates cross, go away, are proportional, approach or converge is proposed. Semiparametric estimation procedures for censored data are given. A test for absence of hazard rates crossing is proposed. Bibl. 11 titles.
Key words and phrases:crossing of hazard rates, hypothesis testing, semiparametric estimation, modified partial likelihood, profile likelihood, statistical test.