This R code may be used for fitting the Accelerated Degradation Model described by Meeker and Escobar in their 1998 book *Statistical Methods for Reliability Data* (on pages 564-567).

The same degradation model is also described in this paper by Meeker, Escobar, and Lu.

The degradation model was fitted in R using the nlme package (version 3.1-118).

Continue reading R code for fitting an Accelerated Degradation Model