Nonparametric estimation of the bivariate survival function with an application to vertically transmitted AIDS
双变量生存函数的非参数估计及母婴传播艾滋病应用
In this paper we propose a nonparametric estimator of the bivariate survival function when the two durations are subject to right censoring. We consider the situation where the duration variables are successive and are always observed in a particular order, and the censoring mechanism bears on their sum, rather than on each separately. Thus, is they are correlated, the second duration is right censored by a dependent variable. A nonparametric maximum likelihood estimator is…