comparing models using anova

[Savitri Appana <saviappana@yahoo.com>]

Hello everyone,

I'm comparing models (updated model1 with different
cov structures) by doing this.

anova(model1, model2, model3, model4, model5) 

This provides a likelihood ratio test for the models;
however, the tests are between 1 vs. 2, 2 vs. 3, 3 vs.
4, and 4 vs. 5.  Is there a way to compare all the
models to the first model only?


Thanks in advance,
Savi

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com