[R-sig-ME] Correlation of Fixed Effects

[Gorjanc Gregor]

Hi!

The default print method outputs also Correlation of Fixed Effects.
How is this computed and what does it actually represent? I have two models
that essentially give me the same message, but in one model the correlations
between covariates are really high 0.9 and higher, while in other model use of
poly(), reduced correlations a lot! Should I care?

Thanks!

Lep pozdrav / With regards,
    Gregor Gorjanc
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