Applied Statistics and Probability for Engineers

Next, the authors discuss an additive model obtained by replacing the timevarying regression coefŽ cients by constants. Chapter 12 presents regression models based on parametric distributions such as the Weibull or log-logistic distributions. Chapter 13 gives a brief summary of multivariate survival analysis, including measures of association and frailty models. This chapter is a good starting point for further study of multivariate survival analysis, for which the book by Hougaard (2000) is an excellent reference.