In this program, the quasi-Newton technique is used to maximize the likelihood function. You can replace the quasi-Newton routine by other optimization routines, such as the NLPNRR subroutine, which ...
The following example demonstrates how you can use the LIFEREG procedure to fit a model to right-censored failure time data. Suppose you conduct a study of two headache pain relievers. You divide ...
This article develops a pair of new prediction summary measures for a nonlinear prediction function with right-censored time-to-event data. The first measure, defined as the proportion of explained ...
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