help with a cross-classified random effects model code in R.
Am I right that if the primary schools were nested within the secondary schools, the model would still be fit with the exact same formula? D
On Wed, Sep 3, 2008 at 1:44 PM, Douglas Bates <bates at stat.wisc.edu> wrote:
On Wed, Sep 3, 2008 at 7:14 AM, Stijn Ruiter <s.ruiter at maw.ru.nl> wrote:
Dear Dr. Bates, You replied to a question by Violet(Shu) Xu on how to estimate cross-classified (XC) models. In the DIGEST version however, no example code is provided. In general, how do we estimate XC models using lme4?
Is the following example for a null model for some dependent variable Y for pupils who attended specific primary and secondary schools correct? Or does lmer then estimate a nested model?
lmer(Y~(1|primaryschool)+(1|secondaryschool),data=dataname)
That will estimate the model with crossed random effects.