Consider the transfusion-related AIDS data in data set III, Appendix A. As discussed in Section…

Consider the transfusion-related AIDS data in data set III, Appendix A. As discussed in Section 1.6, these data are subject to right truncation in that a condition for study membership is that diagnosis of AIDS takes place prior to the end of the study period. Let T represent the number of months from transfusion to AIDS diagnosis, and F(t) = P(T > t be the corresponding (discrete) survivor function. Let r, be the month of diagnosis, and let a; be the total months elapsed to the end of the study period for the ith subject,