invGauss fits the (randomized drift) inverse Gaussian distribution to survival data. The model is described in Aalen OO, Borgan O, Gjessing HK. Survival and Event History Analysis. A Process Point of View. Springer, 2008. It is based on describing time to event as the barrier hitting time of a Wiener process, where drift towards the barrier has been randomized with a Gaussian distribution. The model allows covariates to influence starting values of the Wiener process and/or average drift towards a barrier, with a userdefined choice of link functions.
Package details 


Author  Hakon K. Gjessing 
Maintainer  Hakon K. Gjessing <hakon.gjessing@fhi.no> 
License  GPL (>= 2) 
Version  1.1 
URL  http://www.uib.no/smis/gjessing/projects/invgauss/ 
Package repository  View on CRAN 
Installation 
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