[R] Left censored responses in mixed effects models

Gregor Gorjanc gregor.gorjanc at bfro.uni-lj.si
Mon May 12 21:23:00 CEST 2008


Bert Gunter <gunter.berton <at> gene.com> writes:
> Dear R Fellow-Travellers:
> 
> What is your recommended way of dealing with a left-censored response
> (non-detects) in (linear Gaussian) mixed effects models?

Your description of the data calls for a tobit model

http://en.wikipedia.org/wiki/Tobit_model

I think you need to take a look in the survival package.

Regards, Gregor



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