[R] Piecewise regression in lmer

[Dieter Menne]

AD Hayward wrote:
> 
> I'm attempting to use a piecewise regression to model the trajectory  
> of reproductive traits with age in a longitudinal data set using a  
> mixed model framework.
> 

You might have a look a Alejandro Jara DPpackage which worked quite well for
me in a similar case.

There is also a special list dedicated to lmer:

http://news.gmane.org/gmane.comp.lang.r.lme4.devel

Dieter




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