[R] Left censored responses in mixed effects models

[Gregor Gorjanc]

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