This function estimates the values of the hazard function and the change points in a piecewise Exponential survival model. The number of change points \(K\) needs to be pre-specified.
piecewiseExp_MLE(time, event, K)
A list containing the following objects:
The maximum likelihood estimates of the change points.
The maximum likelihood estimates of the value of the hazard function.
The standard errors of lambda
.
Number of change points to be used in the model.
Event times, censored or observed, in months.
Censoring indicator, 1 for event, 0 for censored.
Number of change points to be used in the model.
Kaspar Rufibach (maintainer)
kaspar.rufibach@roche.com
Fang, L., Zheng, S. (2011). A hybrid approach to predicting events in clinical trials with time-to-event outcomes. Contemp. Clin. Trials, 32, 755--759.
Goodman, M.S., Li, Y., Tiwari, R.C. (2011). Detecting multiple change points in piecewise constant hazard functions. J. Appl. Stat, 38(11), 2523--2532.