I am using survreg from the survival package to run a left censored tobit
model on “non-survival” data.  I have to four questions that I hope someone
can help me with:

 

1) Is there anything I should take into consideration when using frailty()
to estimate random intercepts?

2) Is there anyway of extracting the estimated intercepts produced by
survreg when using frailty()?

3) Can someone point me to documentation on how to interpret the log(scale)
coefficient produced by survreg, particularly in a none “survival” context?

4) Is there now another (simpler)  package that will estimate multilevel
tobit models in R?

 

Thank you for your time and consideration.

Anthony

 

-----------------------------------------------

Anthony A. Pezzola
apezzola@uc.cl
(02) 354-7823
Profesor de Ciencia Política
Instituto de Ciencia Política
Pontificia Universidad Católica de Chile
Santiago de Chile



We looked at the equations on the whiteboard.  After awhile, I finally asked
if they made sense to him and he said no, "I think they're just there to
keep the riffraff out."




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