-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of victor
Sent: Wednesday, December 06, 2006 3:34 AM
To: r-help at stat.math.ethz.ch
Subject: [R] intercept value in lme
Dear all,
I've got a problem in fitting multilevel model in lme. I
don't know to much about that but suspect that something is
wrong with my model.
I'm trying to fit:
m1<-lme(X~Y,~1|group,data=data,na.action=na.exclude,method="ML")
m2<-lme(X~Y+Z,~1|group,data=data,na.action=na.exclude,method="ML")
where:
X - dependent var. measured on a scale ranging from -25 to 0
Y - level 1 variable Z - level 1 variable
In m1 the intercept value is equal -3, in m2 (that is after
adding Lev 2
var.) is equal +16.
What can be wrong with my variables? Is this possible that
intercept value exceeds scale?
Best regards,
victor