or, it could mean you need to recenter your time variable.


-----Original Message-----
From: r-help-bounces@stat.math.ethz.ch on behalf of Marc Bernard
Sent: Fri 11/3/2006 7:24 AM
To: r-help@stat.math.ethz.ch
Subject: [R] correaltion equal 1
 
Dear All,
   
  I wonder if this is a technical or an interpretation problem. I fitted an lme model including a random intercept  and a random slope. The estimated correlation, from the lme,  between the random intercept and the random slope is equal to 1. Does it mean that I should suppress  one of the random effect from the model? 
   
  Thanks a lot,
   
  Bernard 
   

 		
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