[R] How to prevent inclusion of intercept in lme with interaction

Christian Ritz ritz at life.ku.dk
Wed Apr 1 14:37:44 CEST 2009


Hi Dieter,

the following model assumes a linear relationship between the response "newbone" and the
independent variable "t" with a common intercept equal to 0 and treatment-dependent slopes:


grd.lme0 <- lme(newbone~t:treat-1, data=grd, random=~1|subject)

summary(grd.lme0)




Christian



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