VIF for constant yearlySiteCovs in colext model

[Rory Macklin]

Hi all,

I'm building a colext model with the same predictor terms on psi, col and ext. These terms are constant over the entire survey period. When I run the VIF command on each submodel, I get acceptable values for the psi submodel but high VIFs for the same terms in the col and ext submodels. Is this expected, given that the values of each variable are the same year-on-year?

Thanks in advance,

Rory